What level does XP penalty on death kick in?

And what % is it? Also, is it still % of total needed to next level, or did they nerf it to being how much you have earned into the level?

I am honestly kind of hoping they get rid of XP penalty on death.

At 80 lvl it get started to be very annoying.
For me this is not build check, this is insult.
Lack of respect for player time.

When you get to maps (or endgame).
I don't think there is a certain level (if I'm wrong, someone will correct me).

EDIT: Google just told me, level 70.

And its always 10%.
You will always lose 10%.

Sometimes you just don't notice because before level 75(ish) you gain a lot of xp from a single map.

Thanks for the info. I am hoping this is something they reconsider. I think they do it because this game seems to take a lot of inspiration from Diablo II, and that game had XP loss on death at the higher difficulties. Depending on how bad it gets, I might just give up on pushing endgame and roll another character. At the very least, maybe doing lower rank maps gets me more currency drops to get an alt an easier time than doing the campaign on the first character of the season.