780.7% is the change from 57 to 502
Calculation steps:
[( 502 - 57 ) ÷ 57] x 100 = 780.7%
Formula
Percentage change = [(502 - 57) / 57] x 100
Subtract the new number by the original number
502 - 57 = 445
445 ÷ 57 = 7.807017543859649
7.807017543859649 x 100 = 780.7%