-10.2% is the change from 549 to 493
Calculation steps:
[( 493 - 549 ) ÷ 549] x 100 = -10.2%
Formula
Percentage change = [(493 - 549) / 549] x 100
Subtract the new number by the original number
493 - 549 = -56
-56 ÷ 549 = -0.10200364298724955
-0.10200364298724955 x 100 = -10.2%