Bg_DrEaM wrote:
If it fails, no. If it suceed (even if doesn't change anything) it can affect all other stats. The % of the stone show's how much is the possibility of changing other stats - 10% has the lowest possibility, that's why they are the most expencive. But in the end, it all depends on luck.
Recently I've been noticing some 5% and 35% stones. I don't know if these stats are only for certain stones, or if Joymax changed the stone percentages a bit while we weren't looking.

Maybe 5% and 35% stones have been around for a while now, but I don't know because I don't do alchemy that often.