$ratio(value1, value2[, option])
The ratio function will compare the two values given and return them in a ratio format, ala 1:x or x:1.
[Option] are passed to the math function.
Example:
$ratio() example
on pcmd_ratio cmd /say_stat * $(pn) K:D ratio (current/alltime) -- $ratio(k,d,.2) / $ratio(a-t.k,a-t.d,.2);