colPercents: Row, Column, and Total Percentage Tables
Description
Percentage a matrix or higher-dimensional array of frequency counts by
  rows, columns, or total frequency.Usage
colPercents(tab, digits=1)
rowPercents(tab, digits=1)
totPercents(tab, digits=1)
Arguments
tab
a matrix or higher-dimensional array of frequency counts.
digits
number of places to the right of the decimal place for percentages.
Value
- Returns an array of the same size and shape as tabpercentaged by
  rows or columns, plus rows or columns of totals and counts, or by the
  table total.