621.25% is the change from 80 to 577
Calculation steps:
[( 577 - 80 ) ÷ 80] x 100 = 621.25%
Formula
Percentage change = [(577 - 80) / 80] x 100
Subtract the new number by the original number
577 - 80 = 497
497 ÷ 80 = 6.2125
6.2125 x 100 = 621.25%
Example