Down to a less then a tenth of his health. Still over 800k in health.
I'd probably be more impressed if I knew what the health of the other top rankers was.
As then I could have a frame of reference between the two.
As with some games they love massive amounts of health for even a low level boss (had a game for 20th level or so but had easily over 2 mill in health)
So wonder if 800k is still a massive amount.