420.99% is the change from 81 to 422
Calculation steps:
[( 422 - 81 ) ÷ 81] x 100 = 420.99%
Formula
Percentage change = [(422 - 81) / 81] x 100
Subtract the new number by the original number
422 - 81 = 341
341 ÷ 81 = 4.209876543209877
4.209876543209877 x 100 = 420.99%