35.02% is the change from 474 to 640
Calculation steps:
[( 640 - 474 ) ÷ 474] x 100 = 35.02%
Formula
Percentage change = [(640 - 474) / 474] x 100
Subtract the new number by the original number
640 - 474 = 166
166 ÷ 474 = 0.350210970464135
0.350210970464135 x 100 = 35.02%