-3.18% is the change from 566 to 548
Calculation steps:
[( 548 - 566 ) ÷ 566] x 100 = -3.18%
Formula
Percentage change = [(548 - 566) / 566] x 100
Subtract the new number by the original number
548 - 566 = -18
-18 ÷ 566 = -0.03180212014134275
-0.03180212014134275 x 100 = -3.18%