どなたか分かる方教えてください
特にこれと決まったわけじゃないのだけど、例えば以下の武器

https://us.diablo3.com/en/item/unstable-scepter-P61_Wand_norm_unique_02
The damage of Arcane Orb is increased by 378% and its explosion triggers an additional time. (Wizard Only) [350 - 450]%

https://us.diablo3.com/en/item/karleis-point-P61_Unique_Dagger_101_x1
The damage of Impale is increased by 344% and it returns 15 Hatred if it hits an enemy already Impaled. (Demon Hunter Only) [300 - 375]%

この[350 - 450]%とか[300 - 375]%って何なんだろう？
378%や344%が平均値ってわけでもなさそうだし