-95.55% is the change from 449 to 20
Calculation steps:
[( 20 - 449 ) ÷ 449] x 100 = -95.55%
Formula
Percentage change = [(20 - 449) / 449] x 100
Subtract the new number by the original number
20 - 449 = -429
-429 ÷ 449 = -0.955456570155902
-0.955456570155902 x 100 = -95.55%