-71.49% is the change from 449 to 128
Calculation steps:
[( 128 - 449 ) ÷ 449] x 100 = -71.49%
Formula
Percentage change = [(128 - 449) / 449] x 100
Subtract the new number by the original number
128 - 449 = -321
-321 ÷ 449 = -0.7149220489977728
-0.7149220489977728 x 100 = -71.49%