-17.3% is the change from 549 to 454
Calculation steps:
[( 454 - 549 ) ÷ 549] x 100 = -17.3%
Formula
Percentage change = [(454 - 549) / 549] x 100
Subtract the new number by the original number
454 - 549 = -95
-95 ÷ 549 = -0.17304189435336975
-0.17304189435336975 x 100 = -17.3%