-16.7% is the change from 539 to 449
Calculation steps:
[( 449 - 539 ) ÷ 539] x 100 = -16.7%
Formula
Percentage change = [(449 - 539) / 539] x 100
Subtract the new number by the original number
449 - 539 = -90
-90 ÷ 539 = -0.16697588126159554
-0.16697588126159554 x 100 = -16.7%