-97.77% is the change from 449 to 10
Calculation steps:
[( 10 - 449 ) ÷ 449] x 100 = -97.77%
Formula
Percentage change = [(10 - 449) / 449] x 100
Subtract the new number by the original number
10 - 449 = -439
-439 ÷ 449 = -0.977728285077951
-0.977728285077951 x 100 = -97.77%