Calculating % of time that values fall over a threshold

HI,

I have been using the following calculation to determine the % of calls that fall between 65 and 75% in rows 7=102.

=(SUMPRODUCT((B7:B102>=65)*(B7:B102<=75)))/96

i now just wish to see the % that fall over 65. I have tried modifying the above calc but can't get it to work. I am obviously missing something very simple. Can anyone assist? I am using excel 2003.

THanks