-54.69% is the change from 991 to 449
Calculation steps:
[( 449 - 991 ) ÷ 991] x 100 = -54.69%
Formula
Percentage change = [(449 - 991) / 991] x 100
Subtract the new number by the original number
449 - 991 = -542
-542 ÷ 991 = -0.5469223007063572
-0.5469223007063572 x 100 = -54.69%