602.7% is the change from 74 to 520
Calculation steps:
[( 520 - 74 ) ÷ 74] x 100 = 602.7%
Formula
Percentage change = [(520 - 74) / 74] x 100
Subtract the new number by the original number
520 - 74 = 446
446 ÷ 74 = 6.027027027027027
6.027027027027027 x 100 = 602.7%