How to Calculate Profit Margin
Gross profit margin measures what percentage of each dollar of revenue you keep as profit after covering the direct cost of goods.
Step 1 — Gross Profit
Gross Profit = Revenue − Cost
Step 2 — Gross Margin %
Margin % = (Gross Profit ÷ Revenue) × 100
Example: Revenue $1,000 − Cost $700 = Profit $300. $300 ÷ $1,000 × 100 = 30% margin