-3% is the change from 566 to 549
Calculation steps:
[( 549 - 566 ) ÷ 566] x 100 = -3%
Formula
Percentage change = [(549 - 566) / 566] x 100
Subtract the new number by the original number
549 - 566 = -17
-17 ÷ 566 = -0.030035335689045935
-0.030035335689045935 x 100 = -3%