-54.89% is the change from 991 to 447
Calculation steps:
[( 447 - 991 ) ÷ 991] x 100 = -54.89%
Formula
Percentage change = [(447 - 991) / 991] x 100
Subtract the new number by the original number
447 - 991 = -544
-544 ÷ 991 = -0.5489404641775983
-0.5489404641775983 x 100 = -54.89%