424.69% is the change from 81 to 425
Calculation steps:
[( 425 - 81 ) ÷ 81] x 100 = 424.69%
Formula
Percentage change = [(425 - 81) / 81] x 100
Subtract the new number by the original number
425 - 81 = 344
344 ÷ 81 = 4.246913580246914
4.246913580246914 x 100 = 424.69%