526.51% is the change from 83 to 520
Calculation steps:
[( 520 - 83 ) ÷ 83] x 100 = 526.51%
Formula
Percentage change = [(520 - 83) / 83] x 100
Subtract the new number by the original number
520 - 83 = 437
437 ÷ 83 = 5.265060240963855
5.265060240963855 x 100 = 526.51%