-11.36% is the change from 581 to 515
Calculation steps:
[( 515 - 581 ) ÷ 581] x 100 = -11.36%
Formula
Percentage change = [(515 - 581) / 581] x 100
Subtract the new number by the original number
515 - 581 = -66
-66 ÷ 581 = -0.11359724612736662
-0.11359724612736662 x 100 = -11.36%