-6.57% is the change from 867 to 810
Calculation steps:
[( 810 - 867 ) ÷ 867] x 100 = -6.57%
Formula
Percentage change = [(810 - 867) / 867] x 100
Subtract the new number by the original number
810 - 867 = -57
-57 ÷ 867 = -0.0657439446366782
-0.0657439446366782 x 100 = -6.57%