PRDP Group Post: Clinton Foundation efficiency? [View all]

Anyone know what percentage of the Clinton Foundation's donations go towards charitable work?

I heard a number that I won't repeat because it's probably not true, so I checked Charity Navigator which has says that they don't fit a normal model,and thus can't be rated:

http://www.charitynavigator.org/index.cfm?bay=search.profile&ein=311580204#.VTbRGe3D_MI

GuideStar doesn't really have anything.

Admttedly, I know little about nonprofits and accounting. Anyone out there who knows how efficient they are at putting contributions to work compared to other charities?

(This is a PRDP group post. Personal attacks and nastiness will not go well.)