57.03% is the change from 519 to 815
Calculation steps:
[( 815 - 519 ) ÷ 519] x 100 = 57.03%
Formula
Percentage change = [(815 - 519) / 519] x 100
Subtract the new number by the original number
815 - 519 = 296
296 ÷ 519 = 0.5703275529865125
0.5703275529865125 x 100 = 57.03%