Well, developers have a strict policy against sharing such sort of information. So, I think you won't find the exact answer.
However, we do know some stuff about game mechanics considering your topic. Each tool gives the % as a function of the chance (and NOT as a pure bonus to the chance). E.g, if you have a 10% chance of finding copper ore in a dungeon, with a 60%-tool your chance will become 16% (10+0.6*10).
