-12.62% is the change from 951 to 831
Calculation steps:
[( 831 - 951 ) ÷ 951] x 100 = -12.62%
Formula
Percentage change = [(831 - 951) / 951] x 100
Subtract the new number by the original number
831 - 951 = -120
-120 ÷ 951 = -0.12618296529968454
-0.12618296529968454 x 100 = -12.62%