472.53% is the change from 91 to 521
Calculation steps:
[( 521 - 91 ) ÷ 91] x 100 = 472.53%
Formula
Percentage change = [(521 - 91) / 91] x 100
Subtract the new number by the original number
521 - 91 = 430
430 ÷ 91 = 4.725274725274725
4.725274725274725 x 100 = 472.53%