-50.6% is the change from 581 to 287
Calculation steps:
[( 287 - 581 ) ÷ 581] x 100 = -50.6%
Formula
Percentage change = [(287 - 581) / 581] x 100
Subtract the new number by the original number
287 - 581 = -294
-294 ÷ 581 = -0.5060240963855421
-0.5060240963855421 x 100 = -50.6%