-85.12% is the change from 867 to 129
Calculation steps:
[( 129 - 867 ) ÷ 867] x 100 = -85.12%
Formula
Percentage change = [(129 - 867) / 867] x 100
Subtract the new number by the original number
129 - 867 = -738
-738 ÷ 867 = -0.8512110726643599
-0.8512110726643599 x 100 = -85.12%