-39.87% is the change from 449 to 270
Calculation steps:
[( 270 - 449 ) ÷ 449] x 100 = -39.87%
Formula
Percentage change = [(270 - 449) / 449] x 100
Subtract the new number by the original number
270 - 449 = -179
-179 ÷ 449 = -0.3986636971046771
-0.3986636971046771 x 100 = -39.87%