-97.99% is the change from 447 to 9
Calculation steps:
[( 9 - 447 ) ÷ 447] x 100 = -97.99%
Formula
Percentage change = [(9 - 447) / 447] x 100
Subtract the new number by the original number
9 - 447 = -438
-438 ÷ 447 = -0.9798657718120806
-0.9798657718120806 x 100 = -97.99%