-76.53% is the change from 831 to 195
Calculation steps:
[( 195 - 831 ) ÷ 831] x 100 = -76.53%
Formula
Percentage change = [(195 - 831) / 831] x 100
Subtract the new number by the original number
195 - 831 = -636
-636 ÷ 831 = -0.7653429602888087
-0.7653429602888087 x 100 = -76.53%