-86.69% is the change from 879 to 117
Calculation steps:
[( 117 - 879 ) ÷ 879] x 100 = -86.69%
Formula
Percentage change = [(117 - 879) / 879] x 100
Subtract the new number by the original number
117 - 879 = -762
-762 ÷ 879 = -0.8668941979522184
-0.8668941979522184 x 100 = -86.69%