-8.38% is the change from 991 to 908
Calculation steps:
[( 908 - 991 ) ÷ 991] x 100 = -8.38%
Formula
Percentage change = [(908 - 991) / 991] x 100
Subtract the new number by the original number
908 - 991 = -83
-83 ÷ 991 = -0.08375378405650857
-0.08375378405650857 x 100 = -8.38%