Percentile Rank

A percentile rank is typically defined as the proportion of scores in a distribution that a specific score is greater than or equal to. For instance, if you received a score of 95 on a math test and this score was greater than or equal to the scores of 88% of the students taking the test, then your percentile rank would be 88. You would be in the 88th percentile.

alternatively, percentile rank is sometimes defined simply as the proportion of a distribution that a score is greater than.

Follow this link for a more complex definition of percentile.