They increased xp from 98 > 100, and forgot to run script to compensate and % stay same(cause they didnt have one to run. that was not in this game update. that change was supposed to stay unknown to get more $ from runes).
Now we all know. :)
Also people complaning about mp consumption. Well, get used to it. The ninja got you.
Just like Ertheia update where they said it wont have more adena cuts, but guess what, there were adena cuts. haha
Edit:
Looks like the increased for 100+ as some people are posting here. Something around almost 5x more. lol