Percentile rank
In statistics, the percentile rank (PR) of a given score is the percentage of scores in its frequency distribution that are less than that score. == Formulation == Its mathematical formula is P R = C F − ( 0.5 × F ) N × 100 , {\displaystyle PR={\frac {CF-(0.5\times F)}{N}}\times 100,} where CF—the cumulative frequency—is the count of all scores less than or equal to the score of interest, F is the frequency for the score of interest, and N is the number of scores in the distribution.