-20.4% is the change from 549 to 437
Calculation steps:
[( 437 - 549 ) ÷ 549] x 100 = -20.4%
Formula
Percentage change = [(437 - 549) / 549] x 100
Subtract the new number by the original number
437 - 549 = -112
-112 ÷ 549 = -0.2040072859744991
-0.2040072859744991 x 100 = -20.4%