-12.35% is the change from 931 to 816
Calculation steps:
[( 816 - 931 ) ÷ 931] x 100 = -12.35%
Formula
Percentage change = [(816 - 931) / 931] x 100
Subtract the new number by the original number
816 - 931 = -115
-115 ÷ 931 = -0.12352309344790548
-0.12352309344790548 x 100 = -12.35%