From VGInterface Wiki
Returns a representation of your experience on a scale of 0/100. A percentage value can be called be adding the .Percent suffix (CraftExpPctSelf.Percent).
Example
<gamevar=CraftExpPctSelf>
Results in "50/100"
<gamevar=CraftExpPctSelf.Percent>
Results in "50"
For readability;
<gamevar=CraftExpPctSelf> (<gamevar=CraftExpPctSelf.Percent>%)
Results in "50/100 (50%)"
--Derickoleary 20:16, 18 February 2007 (KRAT)