-52.22% is the change from 879 to 420
Calculation steps:
[( 420 - 879 ) ÷ 879] x 100 = -52.22%
Formula
Percentage change = [(420 - 879) / 879] x 100
Subtract the new number by the original number
420 - 879 = -459
-459 ÷ 879 = -0.5221843003412969
-0.5221843003412969 x 100 = -52.22%