Question about increased life percentage

[Onett]

Lets say I have 1000 life and then 1500 after using Battle Orders.
If a Druid summons Oak Sage that adds another 50% life, would it calculate 50% off of the 1500 life or 1000 life?

[Crowd Control]

I think the percentages would add, so another 50% to 1000 life totalling 2000. But! don't pin me on that.

[NASE]

It's correct. They both add to the same modifier.

That's why cta/max life runes aren't as effective on shifted druids. The bonuses from oak and all their shifted skills are added to the small bonusses from cta/runes.