-7.83% is the change from 549 to 506
Calculation steps:
[( 506 - 549 ) ÷ 549] x 100 = -7.83%
Formula
Percentage change = [(506 - 549) / 549] x 100
Subtract the new number by the original number
506 - 549 = -43
-43 ÷ 549 = -0.07832422586520947
-0.07832422586520947 x 100 = -7.83%