13.28% is the change from 640 to 725
Calculation steps:
[( 725 - 640 ) ÷ 640] x 100 = 13.28%
Formula
Percentage change = [(725 - 640) / 640] x 100
Subtract the new number by the original number
725 - 640 = 85
85 ÷ 640 = 0.1328125
0.1328125 x 100 = 13.28%