-6.45% is the change from 868 to 812
Calculation steps:
[( 812 - 868 ) ÷ 868] x 100 = -6.45%
Formula
Percentage change = [(812 - 868) / 868] x 100
Subtract the new number by the original number
812 - 868 = -56
-56 ÷ 868 = -0.06451612903225806
-0.06451612903225806 x 100 = -6.45%