428.57% is the change from 91 to 481
Calculation steps:
[( 481 - 91 ) ÷ 91] x 100 = 428.57%
Formula
Percentage change = [(481 - 91) / 91] x 100
Subtract the new number by the original number
481 - 91 = 390
390 ÷ 91 = 4.285714285714286
4.285714285714286 x 100 = 428.57%