-86.12% is the change from 879 to 122
Calculation steps:
[( 122 - 879 ) ÷ 879] x 100 = -86.12%
Formula
Percentage change = [(122 - 879) / 879] x 100
Subtract the new number by the original number
122 - 879 = -757
-757 ÷ 879 = -0.8612059158134243
-0.8612059158134243 x 100 = -86.12%