The IG report also said most of the Tea Party-type groups would have been selected

with an impartial standard.

The IG found 91 out of the 296 potential political applications that did not have any indications of significant political campaign intervention. That's 31% and that seems high. However, the IRS disputed that finding for a number of reasons, and the IG conceded in a footnote that when additional information was sent in by the groups, evidence of significant political campaign intervention was found in a "number" of those 91. How many, the IG did not say.

However, in another footnote, the IG also revealed that only 17% of the 91 "indication-free" applications were Tea Party-type organizations. That would be about 15. Using the figures in the OP, 72 plus 11 plus 13 equals 96 Tea Party-type groups.

So out of 96 of these improperly targeted groups, 81 of them would have been selected if an impartial standard had been used. That's 84% of them, the vast majority. When the IRS used the improper standards to flag the Tea Party-type groups, it was the equivalent of the LAPD framing OJ Simpson.