-89.97% is the change from 867 to 87
Calculation steps:
[( 87 - 867 ) ÷ 867] x 100 = -89.97%
Formula
Percentage change = [(87 - 867) / 867] x 100
Subtract the new number by the original number
87 - 867 = -780
-780 ÷ 867 = -0.8996539792387543
-0.8996539792387543 x 100 = -89.97%