49.71% is the change from 519 to 777
Calculation steps:
[( 777 - 519 ) ÷ 519] x 100 = 49.71%
Formula
Percentage change = [(777 - 519) / 519] x 100
Subtract the new number by the original number
777 - 519 = 258
258 ÷ 519 = 0.49710982658959535
0.49710982658959535 x 100 = 49.71%