525.3% is the change from 83 to 519
Calculation steps:
[( 519 - 83 ) ÷ 83] x 100 = 525.3%
Formula
Percentage change = [(519 - 83) / 83] x 100
Subtract the new number by the original number
519 - 83 = 436
436 ÷ 83 = 5.253012048192771
5.253012048192771 x 100 = 525.3%