21 is 3.9% of 538
Calculation steps:
( 21 ÷ 538 ) x 100 = 3.9%
Formula
(21 ÷ 538) x 100 = 3.9%
21 ÷ 538 = 0.03903345724907063
Decimal to percent
0.03903345724907063 x 100 = 3.9%
Example