512.35% is the change from 81 to 496
Calculation steps:
[( 496 - 81 ) ÷ 81] x 100 = 512.35%
Formula
Percentage change = [(496 - 81) / 81] x 100
Subtract the new number by the original number
496 - 81 = 415
415 ÷ 81 = 5.1234567901234565
5.1234567901234565 x 100 = 512.35%