-30.27% is the change from 991 to 691
Calculation steps:
[( 691 - 991 ) ÷ 991] x 100 = -30.27%
Formula
Percentage change = [(691 - 991) / 991] x 100
Subtract the new number by the original number
691 - 991 = -300
-300 ÷ 991 = -0.30272452068617556
-0.30272452068617556 x 100 = -30.27%