57.8% is the change from 519 to 819
Calculation steps:
[( 819 - 519 ) ÷ 519] x 100 = 57.8%
Formula
Percentage change = [(819 - 519) / 519] x 100
Subtract the new number by the original number
819 - 519 = 300
300 ÷ 519 = 0.5780346820809249
0.5780346820809249 x 100 = 57.8%