But there is mystery. Either the wiki is wrong, or the game is. As Ethan said, -hours and a multiplied % bonus are 2 different things, even if they give the same result for the most part. If the wiki is correct, the game should be changed to show the %-ages instead, because the -hours are confusing enough as it is, and they really shouldn't be there if they're only an approximation of how it actually works anyway...