Gross Profit
Sales revenue - Costs of sales
Gross Profit Margin
(Gross profit ÷ Sales revenue) x 100
Net Profit
Gross profit - Other operating expenses and interest
Net Profit Margin
(Net profit ÷ Sales revenue) x 100
Average Rate of Return
(Average annual profit (Total profit ÷ No. of years) ÷ Cost of investment) x 100
Percentage Growth
(Increase in size ÷ Original size) x 100