One of the most useful and versatile functions in Excel is the PERCENTRANK function. This function can be used to calculate the percentile rank of a set of data. The PERCENTRANK function takes two arguments: a set of values and a single value which will be evaluated against the set of values.

For example, let's say you have a set of values in cells A1 to A5. To calculate the percentile rank for the value in cell A3, you would use the formula =PERCENTRANK(A1:A5, A3). This function will return the percentile rank of the value in cell A3 relative to the other values in the set. So if A3 is the highest value in the set, the function will return 100%, and if it is the lowest value in the set, it will return 0%.

In addition to calculating the percentile rank of a single value, you can also use the PERCENTRANK function to calculate the percentile ranks of multiple values at once. To do this, simply enter the range of cells containing the values that you want to evaluate as the first argument in the function. For example, if you want to calculate the percentile ranks of the values in cells A1 to A5, you would use the formula =PERCENTRANK(A1:A5). This will return an array of percentile ranks for each value in the specified range.

The PERCENTRANK function is a powerful tool that can be used to calculate the percentile rank of a single value or multiple values at once. It is an essential function for any Excel user who needs to analyze and compare data, both quickly and accurately.