Not sure if this is what you want, but i maybe it will help.
Date Result
1/5/2005 0%
4/26/2005 100%
4/27/2005 100%
3/5/2005 0%
1/5/2005 0%
8/6/2005 100%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Control Date
4/1/2005
The formula i used in the "Results" cell is: =IF(D2>$B$26, (100%), (0%))
I posted a copy of the .xls file at
http://home.tampabay.rr.com/pxlhzd/files, I will leave it up for a couple of days.
(sorry, the formating doesn't look right in the forum, just look at the file i uploaded)
If this is not what you were looking for, if you copy me a the file your working with (or part of it) i might be able to help you.