What percent of 33.5 is 21?
\(\sf \frac{33,5x}{100}=21 \\ \\ 33,5x=2100 \\ \\ \boxed{\sf x=62,6\%}\)
\(\frac{x}{100} = \frac{21}{35.5}\) Multiply 33.5 to 100 then divide the answer to 21, and the answer would be about 62.39 %