-9.72% is the change from 566 to 511
Calculation steps:
[( 511 - 566 ) ÷ 566] x 100 = -9.72%
Formula
Percentage change = [(511 - 566) / 566] x 100
Subtract the new number by the original number
511 - 566 = -55
-55 ÷ 566 = -0.09717314487632508
-0.09717314487632508 x 100 = -9.72%