What Does Profit Margin Mean?
A ratio of profitability calculated as net income divided by revenues, or net profits divided by sales. It measures how much out of every dollar of sales a company actually keeps in earnings.
Profit margin is very useful when comparing companies in similar industries. A higher profit margin indicates a more profitable company that has better control over its costs compared to its competitors. Profit margin is displayed as a percentage; a 20% profit margin, for example, means the company has a net income of $0.20 for each dollar of sales. http://www.investopedia.com/terms/p/profitmargin.asp