I'm not sure if this is possible with proc freq, but you can create an output dataset of the count and percents in proc freq and then print that dataset with an added sum statement. *step 1;
ODS OUTPUT DATA=library.dataset;
PROC FREQ DATA=have;
TABLES variable / nocum;
RUN;
*step 2;
PROC PRINT Data = library.dataset;
SUM variable name;
RUN; Hope that helps!
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