-10.38% is the change from 549 to 492
Calculation steps:
[( 492 - 549 ) ÷ 549] x 100 = -10.38%
Formula
Percentage change = [(492 - 549) / 549] x 100
Subtract the new number by the original number
492 - 549 = -57
-57 ÷ 549 = -0.10382513661202186
-0.10382513661202186 x 100 = -10.38%