-84.31% is the change from 867 to 136
Calculation steps:
[( 136 - 867 ) ÷ 867] x 100 = -84.31%
Formula
Percentage change = [(136 - 867) / 867] x 100
Subtract the new number by the original number
136 - 867 = -731
-731 ÷ 867 = -0.8431372549019608
-0.8431372549019608 x 100 = -84.31%