361.54% is the change from 91 to 420
Calculation steps:
[( 420 - 91 ) ÷ 91] x 100 = 361.54%
Formula
Percentage change = [(420 - 91) / 91] x 100
Subtract the new number by the original number
420 - 91 = 329
329 ÷ 91 = 3.6153846153846154
3.6153846153846154 x 100 = 361.54%