-76.29% is the change from 831 to 197
Calculation steps:
[( 197 - 831 ) ÷ 831] x 100 = -76.29%
Formula
Percentage change = [(197 - 831) / 831] x 100
Subtract the new number by the original number
197 - 831 = -634
-634 ÷ 831 = -0.762936221419976
-0.762936221419976 x 100 = -76.29%