57.25% is the change from 407 to 640
Calculation steps:
[( 640 - 407 ) ÷ 407] x 100 = 57.25%
Formula
Percentage change = [(640 - 407) / 407] x 100
Subtract the new number by the original number
640 - 407 = 233
233 ÷ 407 = 0.5724815724815725
0.5724815724815725 x 100 = 57.25%