-10.9% is the change from 991 to 883
Calculation steps:
[( 883 - 991 ) ÷ 991] x 100 = -10.9%
Formula
Percentage change = [(883 - 991) / 991] x 100
Subtract the new number by the original number
883 - 991 = -108
-108 ÷ 991 = -0.10898082744702321
-0.10898082744702321 x 100 = -10.9%