1. Markup% = ((selling price - cost)/cost ) * 100
As per the picture (249-185.78)/185.78 * 100 = 34.03%
2. GP% = ((selling price - cost)/Selling Price) * 100
As per the picture (249-185.78)/249 * 100 = 25.39%
3. Value in bracket (in the picture below) is = Selling - cost/cost * 100