-3.61% is the change from 581 to 560
Calculation steps:
[( 560 - 581 ) ÷ 581] x 100 = -3.61%
Formula
Percentage change = [(560 - 581) / 581] x 100
Subtract the new number by the original number
560 - 581 = -21
-21 ÷ 581 = -0.03614457831325301
-0.03614457831325301 x 100 = -3.61%