PERCENTILE(p,range) computes pth percentile of the contents of the cells in the specified range. If one of the cells in range does not have a numeric value, but is empty or has a string value, then this cell will not be taken into account for calculating the percentile, or any of the other statistical functions.
The argument range can be a list of numbers, cell addresses, cell ranges (such as A1:A10).
Range can also be a matrix. In that case the function returns a matrix with one row and the same number of columns, with each element the PERCENTILE of the corresponding column. If range is a row matrix, it is converted to a column matrix first.
PERCENTILE(75,A1:A100) returns the 75th percentile of the data in cells A1 to A100.