-9.89% is the change from 566 to 510
Calculation steps:
[( 510 - 566 ) ÷ 566] x 100 = -9.89%
Formula
Percentage change = [(510 - 566) / 566] x 100
Subtract the new number by the original number
510 - 566 = -56
-56 ÷ 566 = -0.0989399293286219
-0.0989399293286219 x 100 = -9.89%