-3.61% is the change from 582 to 561
Calculation steps:
[( 561 - 582 ) ÷ 582] x 100 = -3.61%
Formula
Percentage change = [(561 - 582) / 582] x 100
Subtract the new number by the original number
561 - 582 = -21
-21 ÷ 582 = -0.03608247422680412
-0.03608247422680412 x 100 = -3.61%