-9.97% is the change from 923 to 831
Calculation steps:
[( 831 - 923 ) ÷ 923] x 100 = -9.97%
Formula
Percentage change = [(831 - 923) / 923] x 100
Subtract the new number by the original number
831 - 923 = -92
-92 ÷ 923 = -0.09967497291440953
-0.09967497291440953 x 100 = -9.97%