The built in columns like 'PCT Chng' seem to decide what format they are by the math. If first and last are integer values you get a PCt Chng with no decimals, if one of the values is a decimials you get a PCT Chng with decimals.
This fools the eye when you've sorted the values, the first thing people call out when they look at flex cards sorted by Pct Chng is that they aren't sorted by percent change because they just see the fact the smaller number is "longer"
200%
199.87%
Some control over how it rounds would be a welcome addition, so it can be applied consistently.