-8.82% is the change from 850 to 775
Calculation steps:
[( 775 - 850 ) ÷ 850] x 100 = -8.82%
Formula
Percentage change = [(775 - 850) / 850] x 100
Subtract the new number by the original number
775 - 850 = -75
-75 ÷ 850 = -0.08823529411764706
-0.08823529411764706 x 100 = -8.82%