SUMIFS Formula help

Hello everyone

I have some troubles when I want to make a SUMIFS formula (using Smartsheet in French). I want my formula to return the value of the % that answer the two criterias, the year = 2020 and the month = 09 so the result should be 64%. I don't have an error but only 0% as a result.

Does someone know how to calculate this ?

Maybe I am not using the good formula in order to get a value based on criterias ?

Thank you very much for you help


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