-80.28% is the change from 867 to 171
Calculation steps:
[( 171 - 867 ) ÷ 867] x 100 = -80.28%
Formula
Percentage change = [(171 - 867) / 867] x 100
Subtract the new number by the original number
171 - 867 = -696
-696 ÷ 867 = -0.8027681660899654
-0.8027681660899654 x 100 = -80.28%