There are two main possibilities to calculate percentage changes:
1. The Rate of Change analysis
Set the Method as “Change over period %”, and then choose the length.
You can also calculate percentage change over period with the formula:
Examples for Y/Y, M/M and Q/Q changes, respectively:
cop(segdp, YearsLength(1)) cop(segdp, MonthsLength(1)) cop(segdp, QuartersLength(1))