425.93% is the change from 81 to 426
Calculation steps:
[( 426 - 81 ) ÷ 81] x 100 = 425.93%
Formula
Percentage change = [(426 - 81) / 81] x 100
Subtract the new number by the original number
426 - 81 = 345
345 ÷ 81 = 4.2592592592592595
4.2592592592592595 x 100 = 425.93%