Mana surge and mastery

[zann0t]

How mana surge % is calculate ?

mastery point / mana surge %
282 => 59 %
291 =>312 = 60 %

If I try to understand :
59/282 = 0.209

So … with rounding 0.21 * 282 = 59.22
with 291 (60% in real ) => 291*0.21 = 61.11

So I don’t understand

[Lyya]

The formula (for PC/Mobile) is:
CHANCE = (0.73 * MASTERY) / (MASTERY + 62)

Source:

Change to the Mastery math?

I read through the guide on Mana Mastery and found that the formula posted there doesn’t give me the mastery my hero page shows. My mastery is 153 for blue for example. The guide states the formula is Surge Chance = Mastery / (100+Mastery). So . . . 153 / (100+153) = 153 / 253 = 0.605 Now rounding down I get 60% but my hero page shows 51%. Has the formula been changed in some previous update?

[zann0t]

ok I try :

(0.73 *312) /(312 +62) = 0.6089 so the rouding is not fair ???

[Amadan]

I’d guess that it’s simply truncated, not rounded, for operational simplicity.