I have a regular freeform table working properly below.
However, when I attempt to Create Metric from Selection to find the percent change or any change, then the column data drops to zero.
Has anyone seen this issue?
Yes, I'm able to replicate it! Weird!
Even weirder, after adding the Percent Change metric, the "Last month" column reflects data coming from 3 months ago, and the "2 months ago" columns reflects data from 4 months ago!
You should file this with Client Care promptly.