-23.18% is the change from 867 to 666
Calculation steps:
[( 666 - 867 ) ÷ 867] x 100 = -23.18%
Formula
Percentage change = [(666 - 867) / 867] x 100
Subtract the new number by the original number
666 - 867 = -201
-201 ÷ 867 = -0.23183391003460208
-0.23183391003460208 x 100 = -23.18%