The part is 43.6 and the whole is 20. You need to find the percent.

Let n represent the percent.

Part = percentwhole

           (Substitute part = 43.6 and whole = 20)

      (Divide each side by 20)

               (Cancel common terms)

                  (Divide: )

     (Multiply with 100 and add percent sign)

                (Multiply: )

43.6 is 218 of 20.