It starts in the high 80s, I’ve seen it before and it’s doing it now at 86% for me, if you are already seeing shutdowns then it should already be slowing itself down to try and prevent that.Yeah i think the throttling starts at the 80% mark. It should be ok for now.
Mine states in the Battery Health/Peak Performance Capability “Your battery’s health is significantly degraded and peak performance may be effected” and I’ve seen that for a few percent already and I can definitely see some less smooth animations and other stuff that suggests the OS is slowing the chips down to save power draw and stop the risk of shutdowns.