-97.99% is the change from 448 to 9
Calculation steps:
[( 9 - 448 ) ÷ 448] x 100 = -97.99%
Formula
Percentage change = [(9 - 448) / 448] x 100
Subtract the new number by the original number
9 - 448 = -439
-439 ÷ 448 = -0.9799107142857143
-0.9799107142857143 x 100 = -97.99%