-56.8% is the change from 581 to 251
Calculation steps:
[( 251 - 581 ) ÷ 581] x 100 = -56.8%
Formula
Percentage change = [(251 - 581) / 581] x 100
Subtract the new number by the original number
251 - 581 = -330
-330 ÷ 581 = -0.5679862306368331
-0.5679862306368331 x 100 = -56.8%