-33.2% is the change from 777 to 519
Calculation steps:
[( 519 - 777 ) ÷ 777] x 100 = -33.2%
Formula
Percentage change = [(519 - 777) / 777] x 100
Subtract the new number by the original number
519 - 777 = -258
-258 ÷ 777 = -0.33204633204633205
-0.33204633204633205 x 100 = -33.2%