=COUNTIF(A1:A1000,"=yes")/COUNTA(A1:A1000)

--OR--

=COUNTIF(A1:A1000,"=no")/COUNTA(A1:A1000)

Format this cell as percent (%)

this will not count rows with blanks (COUNTA) only counts cells with
entries.

Does this work for you?


--
swatsp0p


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