Question bout GA. (in General)

We all know GA has to be 2.5x the damage to get a maximum of about 60% damage, subject to AC.

But is this damage done to the minion or damage as seen on your battle report.

IE:

Let us say someone I fight has a GA of 2.5M. And they have a minion with 1M HP.

And I do 2.5M damage to that minion. Does the GA calculation use the HP of the minion or the HP I do?

If it is the first, I would take a full 60% max damage subject to AC. If the latter, it would be a lot less as the GA/damage ratio is 1 and not 2.5.

Anyone know the answer? Not conjuncture but the actual answer.

GA only returns damage for the HP you have

I know that novice.

But I am more concerned about the ratio of GA. Is it based upon the damage you would do via the battle report or the actual hp the minion has.

If your answer means the hp of the minion, than thanks, I misunderstood your answer.

The HP the minion has.