-6.19% is the change from 549 to 515
Calculation steps:
[( 515 - 549 ) ÷ 549] x 100 = -6.19%
Formula
Percentage change = [(515 - 549) / 549] x 100
Subtract the new number by the original number
515 - 549 = -34
-34 ÷ 549 = -0.061930783242258654
-0.061930783242258654 x 100 = -6.19%