I wonder what this should mean
from the patch notes:
Combat & Gameplay
General
Fixed an issue where percentage bonuses to the same type of stat (Magicka Recovery, Max Magicka, etc.) would stack multiplicatively rather than additively. This will result in some stats changing slightly (generally going down).
https://forums.elderscrollsonline.com/en/discussion/281584/pc-mac-patch-notes-v2-5-5#latest
I hope that after this change, switching my Altmer to Redguard to get more racial passives for stam DK, will not result in lower stats than before