-40.96% is the change from 879 to 519
Calculation steps:
[( 519 - 879 ) ÷ 879] x 100 = -40.96%
Formula
Percentage change = [(519 - 879) / 879] x 100
Subtract the new number by the original number
519 - 879 = -360
-360 ÷ 879 = -0.40955631399317405
-0.40955631399317405 x 100 = -40.96%