I have an excel document with a list of names and addresses of whom I've
recently sent a direct mail campaign too. I have a total of 10 rows (A-J). I
titled Column H "responses", in which I enter "Yes" if I received a response
and left blank if I did not receive a response.

I want to now create a formula that calculates a total response %. E.G. 900
total leads, 9 responses equals 1% response rate. I need the formula to
recognize the "Yes" entered in Column H, take the total and divide that by
the total number of leads (or rows excluding row 1 used for titles).

I really don't have the slightest clue on how to create this formula. I hope
someone can help.

Thanks!