Percentile Formula

Percentile Formula

The Percentile Formula determines how well a person performs compared to others. The formula calculates where a student stands on the test compared to other candidates. A percentile is a number that represents the percentage of scores below the given number. Here are a few examples of the Percentile Formula and how it is applied. Percentiles are defined as the values below which a given percentage falls. As an example, Ben is the fourth tallest child in a group of 20 children, while 80% of them are shorter than him. As a result, Ben is at the 80th percentile. In competitive exams such as the SAT, LSAT, etc., it is commonly used.

ISPs bill “burstable” internet bandwidth by cutting off the top 5% or 2% of bandwidth peaks each month, then charging at the nearest rate. By doing so, infrequent peaks are ignored, and the customer is charged fairly. This statistic is so useful for measuring data throughput because it gives an accurate picture of bandwidth costs. It means that 95% of the time, the usage is below this amount: so, the remaining 5% of the time, the usage is above this amount.

In growth charts, physicians compare infants’ and children’s weights and heights to national averages and percentiles to evaluate their growth. When setting speed limits and assessing whether a limit is too high or too low, 85th-percentile speeds are often used as guidelines.

Value at risk refers to (in a model-dependent manner) the probability of the portfolio’s value not sinking within a given period of time and given a level of confidence.

What is Percentile Formula?

The Percentile Formula is used when comparing exact values or numbers with other numbers from the given data, i.e. accuracy. Although percentiles and percentages are often viewed as one concept, they are actually two different concepts. Percentiles are the values below the percentage found based on the given data, whereas percentages are the values above the percentage. Most of the time, Percentile Formula is used in day-to-day lives in order to find test scores or biometric measurements. Hence, the Percentile Formula is:

Percentile = (n/N) × 100


The percentile of x is the ratio between the number of values below x and the total number of values multiplied by 100. i.e., the formula is

100 x (Number of Values Below “x” / Total Values) = Percentile

Meticulous practice is required in the subject of Mathematics. It can be very difficult for students to comprehend the subject because it contains so many operations, calculations, concepts, properties, and more. Mathematics can therefore be the most challenging subject for students. The purpose of textbooks is to help students develop reliable fundamental knowledge of the subject. As a result, Extramarks provides students with solutions in order to deepen their understanding of the Percentile Formula. To stay on top of these concepts, students must practice a number of questions in order to prepare for the examinations. In preparation for the Mathematics examination, a thorough review of textbooks is the first and foremost step. As a result, Extramarks provides them with solutions to all the chapters in Mathematics. On the Extramarks website, students can easily find the extra questions for the chapter. Students can practice the concepts again so they do not forget any property or operation, and can solve any complicated problems that they may encounter in the examination. On the Extramarks website, students can easily find past years’ papers and sample papers of Mathematics that they can practice thoroughly. Using this model, students can solve their own question papers. Students become confident and ready for any in-school, board or competitive examination as a result of all this. Before taking an examination, Extramarks recommends that students thoroughly review the solutions.

Percentile Formula

P = (n/N) × 100


  • In this case, n will represent the ordinal rank or value below the given value
  • The values in the data set is N
  • Percentile = P


The percentile is calculated as. (Number of Values Below “x” / Total Values) x 100.

Steps of Percentile Formula

Here are a few steps to find the percentile using the Percentile Formula. A qth percentile is a value that divides data into two parts, i.e. the lowest part contains q percent of the data, and the upper part contains the rest.

  • The first step is to arrange the data set in ascending order.
  • The next step is to count the number of values in the data set and represent it as r
  • Calculate the value of q/100 in step 3
  • The fourth step is to multiply q percent by r
  • The fifth step is to round the answer if it is not a whole number. Proceed to the next step if it is a whole number
  • Find the mean and next number by counting the values in the data set. This is the qth percentile
  • Count the value in the data set, once you reach that value, it is the qth percentile based on what we determined in step 5.

Examples Using Percentile Formula

To gain expertise in the topic and to deeply understand the concepts related to it, students need to practice various examples related to the topic. Percentile questions guide students through the summary and key points of the chapter. They are one of the best tools for students to revise. Extramarks also offers students multiple formulas and learning modules such as K12 Study Material, Learn Practice Tests, Live Doubt Solving Classes, and more. K12 Study Material includes all the subjects for all the respective classes. Through Gamified Learning, students can enjoy their studies through various animations. By allowing students to do a proper self-assessment, the Learn Practice Tests help students track their progress. Students can interact with their teachers and get answers to their questions in a Live Doubt-Solving Class. Moreover, Extramarks provides students with the best teachers, and comprehensive courses so they can have a bright academic future. The percentile questions provided by Extramarks are comprehensive and credible. It is sometimes difficult for students to go through their entire syllabus on time which may lead to them making negligent errors in exams. 

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FAQs (Frequently Asked Questions)

1. What is the Percentile Formula?

The Percentile Formula determines how well a person performs compared to others. Using the formula, a student can find out where he or she stands in comparison to other candidates. Students may often use Percentile Formula to find test scores or biometric measurements in their day-to-day lives.

2. What is the formula to calculate the Percentile Formula?

Percentiles are calculated by multiplying the number of values below x by the total number of values. In other words, the Percentile Formula is:

Percentile = (Number of Values Below “x” / Total Number of Values) × 100

3. Is there a formula to calculate the Percentile Formula based on rank?

Based on the rank of a number, the Percentile Formula is as follows:

P = (n/N) × 100


In this case, n will represent the ordinal rank or value below the given value

P = percentile

4. What are the steps involved in calculating Percentile Formula?

  • Sort the values by rank. 
  • The data set should be ranked from smallest to largest. 
  • Take k and multiply it by n. 
  • Take k (percent) and multiply it by n (the total number of values). 
  • Decide whether to round up or down. To find the percentile, use a ranked data set.

5. What is the purpose of calculating the Percentile Formula?

The Percentile Formula is used in statistics to understand and interpret data. It is the value at which the n percent of the data falls below the nth percentile. Percentiles are used in everyday life to understand test scores, health indicators, and other measurements.