507.41% is the change from 81 to 492
Calculation steps:
[( 492 - 81 ) ÷ 81] x 100 = 507.41%
Formula
Percentage change = [(492 - 81) / 81] x 100
Subtract the new number by the original number
492 - 81 = 411
411 ÷ 81 = 5.074074074074074
5.074074074074074 x 100 = 507.41%