-8.88% is the change from 991 to 903
Calculation steps:
[( 903 - 991 ) ÷ 991] x 100 = -8.88%
Formula
Percentage change = [(903 - 991) / 991] x 100
Subtract the new number by the original number
903 - 991 = -88
-88 ÷ 991 = -0.08879919273461151
-0.08879919273461151 x 100 = -8.88%