462.96% is the change from 81 to 456
Calculation steps:
[( 456 - 81 ) ÷ 81] x 100 = 462.96%
Formula
Percentage change = [(456 - 81) / 81] x 100
Subtract the new number by the original number
456 - 81 = 375
375 ÷ 81 = 4.62962962962963
4.62962962962963 x 100 = 462.96%