-10.65% is the change from 930 to 831
Calculation steps:
[( 831 - 930 ) ÷ 930] x 100 = -10.65%
Formula
Percentage change = [(831 - 930) / 930] x 100
Subtract the new number by the original number
831 - 930 = -99
-99 ÷ 930 = -0.1064516129032258
-0.1064516129032258 x 100 = -10.65%