520.48% is the change from 83 to 515
Calculation steps:
[( 515 - 83 ) ÷ 83] x 100 = 520.48%
Formula
Percentage change = [(515 - 83) / 83] x 100
Subtract the new number by the original number
515 - 83 = 432
432 ÷ 83 = 5.204819277108434
5.204819277108434 x 100 = 520.48%