-22.94% is the change from 850 to 655
Calculation steps:
[( 655 - 850 ) ÷ 850] x 100 = -22.94%
Formula
Percentage change = [(655 - 850) / 850] x 100
Subtract the new number by the original number
655 - 850 = -195
-195 ÷ 850 = -0.22941176470588234
-0.22941176470588234 x 100 = -22.94%