-17.16% is the change from 542 to 449
Calculation steps:
[( 449 - 542 ) ÷ 542] x 100 = -17.16%
Formula
Percentage change = [(449 - 542) / 542] x 100
Subtract the new number by the original number
449 - 542 = -93
-93 ÷ 542 = -0.17158671586715868
-0.17158671586715868 x 100 = -17.16%