-16.39% is the change from 549 to 459
Calculation steps:
[( 459 - 549 ) ÷ 549] x 100 = -16.39%
Formula
Percentage change = [(459 - 549) / 549] x 100
Subtract the new number by the original number
459 - 549 = -90
-90 ÷ 549 = -0.16393442622950818
-0.16393442622950818 x 100 = -16.39%