-50.4% is the change from 879 to 436
Calculation steps:
[( 436 - 879 ) ÷ 879] x 100 = -50.4%
Formula
Percentage change = [(436 - 879) / 879] x 100
Subtract the new number by the original number
436 - 879 = -443
-443 ÷ 879 = -0.5039817974971559
-0.5039817974971559 x 100 = -50.4%