-6.15% is the change from 992 to 931
Calculation steps:
[( 931 - 992 ) ÷ 992] x 100 = -6.15%
Formula
Percentage change = [(931 - 992) / 992] x 100
Subtract the new number by the original number
931 - 992 = -61
-61 ÷ 992 = -0.06149193548387097
-0.06149193548387097 x 100 = -6.15%