549.4% is the change from 83 to 539
Calculation steps:
[( 539 - 83 ) ÷ 83] x 100 = 549.4%
Formula
Percentage change = [(539 - 83) / 83] x 100
Subtract the new number by the original number
539 - 83 = 456
456 ÷ 83 = 5.493975903614458
5.493975903614458 x 100 = 549.4%