Issues with setting HiS and Move Silently values with "Set % of"

[RoyalProtector]

I'm not sure why but I created a spell so when you enter in combat, your values *should* be set to a particular percentage. However, it causes strange results.

Testing with a level 10 Human Shadowdancer, with a skill of 100 in both, I had results such as these:

If I set the percentage to 0, for example, the values seem to return to the minimal class values + kit bonus.

If I set the percentage to 50, that spell actually reduces Move Silently to 65 and Hide in Shadows to 62. I was expecting 50 in both.

Wut? What am I missing here?

Edited September 7, 2022 by RoyalProtector

[RoyalProtector]

In case anyone cares, it's because it modifies your base skill level. Doesn't take the actual skill level achieved through stats and other effects.