-56.39% is the change from 665 to 290
Calculation steps:
[( 290 - 665 ) ÷ 665] x 100 = -56.39%
Formula
Percentage change = [(290 - 665) / 665] x 100
Subtract the new number by the original number
290 - 665 = -375
-375 ÷ 665 = -0.5639097744360902
-0.5639097744360902 x 100 = -56.39%