-50.17% is the change from 879 to 438
Calculation steps:
[( 438 - 879 ) ÷ 879] x 100 = -50.17%
Formula
Percentage change = [(438 - 879) / 879] x 100
Subtract the new number by the original number
438 - 879 = -441
-441 ÷ 879 = -0.5017064846416383
-0.5017064846416383 x 100 = -50.17%