-2.23% is the change from 449 to 439
Calculation steps:
[( 439 - 449 ) ÷ 449] x 100 = -2.23%
Formula
Percentage change = [(439 - 449) / 449] x 100
Subtract the new number by the original number
439 - 449 = -10
-10 ÷ 449 = -0.022271714922048998
-0.022271714922048998 x 100 = -2.23%