Margin = (Profit ÷ Revenue) × 100
Profit = Revenue – Cost
Gross margin = ((Revenue – Cost of Goods Sold) ÷ Revenue) × 100
Net margin = (Net Profit ÷ Revenue) × 100
Operating margin = (Operating Profit ÷ Revenue) × 100
To find selling price from cost and margin: Selling Price = Cost ÷ (1 – Margin)
To find profit margin from cost and selling price: Margin = ((Selling Price – Cost) ÷ Selling Price) × 100
To find markup: Markup = ((Selling Price – Cost) ÷ Cost) × 100