-56.56% is the change from 587 to 255
Calculation steps:
[( 255 - 587 ) ÷ 587] x 100 = -56.56%
Formula
Percentage change = [(255 - 587) / 587] x 100
Subtract the new number by the original number
255 - 587 = -332
-332 ÷ 587 = -0.565587734241908
-0.565587734241908 x 100 = -56.56%