Calculate selling price from cost and markup percentage — or find your profit margin from any selling price. Understand the difference between markup and margin.
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Markup % = (selling price - cost) / cost × 100. Margin % = (selling price - cost) / selling price × 100. The same profit expressed as a percentage of cost vs selling price gives very different numbers — a common source of pricing errors. Retail and wholesale businesses typically target gross margins; service businesses typically think in markup.