721.25% is the change from 80 to 657
Calculation steps:
[( 657 - 80 ) ÷ 80] x 100 = 721.25%
Formula
Percentage change = [(657 - 80) / 80] x 100
Subtract the new number by the original number
657 - 80 = 577
577 ÷ 80 = 7.2125
7.2125 x 100 = 721.25%
Example