63.78% is the change from 519 to 850
Calculation steps:
[( 850 - 519 ) ÷ 519] x 100 = 63.78%
Formula
Percentage change = [(850 - 519) / 519] x 100
Subtract the new number by the original number
850 - 519 = 331
331 ÷ 519 = 0.6377649325626205
0.6377649325626205 x 100 = 63.78%