-2.83% is the change from 566 to 550
Calculation steps:
[( 550 - 566 ) ÷ 566] x 100 = -2.83%
Formula
Percentage change = [(550 - 566) / 566] x 100
Subtract the new number by the original number
550 - 566 = -16
-16 ÷ 566 = -0.028268551236749116
-0.028268551236749116 x 100 = -2.83%