-4.23% is the change from 591 to 566
Calculation steps:
[( 566 - 591 ) ÷ 591] x 100 = -4.23%
Formula
Percentage change = [(566 - 591) / 591] x 100
Subtract the new number by the original number
566 - 591 = -25
-25 ÷ 591 = -0.04230118443316413
-0.04230118443316413 x 100 = -4.23%