-77.06% is the change from 850 to 195
Calculation steps:
[( 195 - 850 ) ÷ 850] x 100 = -77.06%
Formula
Percentage change = [(195 - 850) / 850] x 100
Subtract the new number by the original number
195 - 850 = -655
-655 ÷ 850 = -0.7705882352941177
-0.7705882352941177 x 100 = -77.06%