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To find the percentile rank of a specific score, count the number of scores in the distribution that are lower than it, and convert that number to a percentage of the total number of scores. For example, if $$32$$ out of $$40$$ scores (which is $$80\%$$) are lower than a score of $$23$$, then the score of $$23$$ has a percentile rank of $$80$$.

Example of Calculating Percentile Ranks

If a researcher observes that 32 out of 40 scores in a dataset are lower than a participant's score of 23, what is the percentile rank of the score of 23?

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