-23.88% is the change from 867 to 660
Calculation steps:
[( 660 - 867 ) ÷ 867] x 100 = -23.88%
Formula
Percentage change = [(660 - 867) / 867] x 100
Subtract the new number by the original number
660 - 867 = -207
-207 ÷ 867 = -0.23875432525951557
-0.23875432525951557 x 100 = -23.88%