498.8% is the change from 83 to 497
Calculation steps:
[( 497 - 83 ) ÷ 83] x 100 = 498.8%
Formula
Percentage change = [(497 - 83) / 83] x 100
Subtract the new number by the original number
497 - 83 = 414
414 ÷ 83 = 4.9879518072289155
4.9879518072289155 x 100 = 498.8%