-50.6% is the change from 587 to 290
Calculation steps:
[( 290 - 587 ) ÷ 587] x 100 = -50.6%
Formula
Percentage change = [(290 - 587) / 587] x 100
Subtract the new number by the original number
290 - 587 = -297
-297 ÷ 587 = -0.5059625212947189
-0.5059625212947189 x 100 = -50.6%