-33.91% is the change from 991 to 655
Calculation steps:
[( 655 - 991 ) ÷ 991] x 100 = -33.91%
Formula
Percentage change = [(655 - 991) / 991] x 100
Subtract the new number by the original number
655 - 991 = -336
-336 ÷ 991 = -0.33905146316851664
-0.33905146316851664 x 100 = -33.91%