550.6% is the change from 83 to 540
Calculation steps:
[( 540 - 83 ) ÷ 83] x 100 = 550.6%
Formula
Percentage change = [(540 - 83) / 83] x 100
Subtract the new number by the original number
540 - 83 = 457
457 ÷ 83 = 5.506024096385542
5.506024096385542 x 100 = 550.6%