40 is 6.25% of 640
Calculation steps:
( 40 ÷ 640 ) x 100 = 6.25%
Formula
(40 ÷ 640) x 100 = 6.25%
40 ÷ 640 = 0.0625
Decimal to percent
0.0625 x 100 = 6.25%
Example