-97.88% is the change from 425 to 9
Calculation steps:
[( 9 - 425 ) ÷ 425] x 100 = -97.88%
Formula
Percentage change = [(9 - 425) / 425] x 100
Subtract the new number by the original number
9 - 425 = -416
-416 ÷ 425 = -0.9788235294117648
-0.9788235294117648 x 100 = -97.88%