You mean his ACU rating, I assume. Trouble is, that's his lifetime rating, and Father Time has been in the Senate for quite awhile. His recent ratings are nowhere near that; something like 62% or so.
His most RECENT ACU rating (2006) is 65
to put this in perspective he ranked 47th in the Senate a hair above Nelson (D Neb)
Data from the ACU website:
Dement 100
Thune 100
Inhofe 100
Coburn 100
Ensign 100
Coryn 96
Enzi 96
Thomas 96
Allen 96
Dole 96
Santorum 96
Chambliss 96
Isakson 96
Bunning 96
Vitter 92
Talent 92
Burns 92
Sessions 92
Burr 92
Kyl 92
Craig 88
Crapo 88
Grassley 88
Allard 88
Sununu 88
Brownback 87
Lott 87
Roberts 84
McConnell 84
Hutchinson 84
Hatch 84
Martinez 84
Graham 83
Bond 80
Furst 76
Domenici 75
Hagel 75
Shelby 74
Gregg 72
Dewine 72
Smith 72
Bennett 72
Alexander 72
Murkowski 71
Coleman 68
Cochran 67
***MCCAIN 65***
Nelson (D Neb)64
Warner 64
Lugar 64