-0.34% is the change from 583 to 581
Calculation steps:
[( 581 - 583 ) ÷ 583] x 100 = -0.34%
Formula
Percentage change = [(581 - 583) / 583] x 100
Subtract the new number by the original number
581 - 583 = -2
-2 ÷ 583 = -0.003430531732418525
-0.003430531732418525 x 100 = -0.34%