Volibear runes

Volibear has 584 HP at level one. So when deciding my runes and masteries I need to do some math. I was just checking to make sure this looks OK.

Scaling HP: 1.33/LVLv So this would be 1.33*9=11.97 extra HP at lvl one. Which is 71.82 at level 6

Percentage HP: .05% .059=4.5% So 584/x=100/4.5 so around 26.26 HP extra at level 1 Volibear has 924 HP at level 6 so 41.58 HP extra at level 6 If I were to include cinderhulk into this that is an additional 15% bonus hp on top of the 4.5. So 19.5% HP bonus. 924+400 for cinderhulk = 1324 + 19.5% = 258.59 bonus HP Would be 198.61 without. So that is 60 hp extra for the percent runes. Which is still less than scaling HP runes lol Flat HP: 8 89=72 So you get 72 bonus HP