How to calculate profit margin and markup from cost and selling price?

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Here's an example: You buy an item for $60 and sell it for $100. Profit = Selling price − Cost = $100 − $60 = $40. Profit margin = (Profit / Selling price) × 100 = ($40 / $100) × 100 = 40%. Markup = (Profit / Cost) × 100 = ($40 / $60) × 100 ≈ 66.67%. Note: margin and markup are NOT the same, because margin is measured against the selling price while markup is measured against the cost.

How to Calculate Profit Margin and Markup from Cost and Selling Price Margin vs markup

I buy an item for $ and sell it for $ .
What's my profit margin and my markup?