Operating profit as a percentage of sales widened to 28.3 percent from 22.8 percent a year earlier.

营业利润占销售的百分比率也由去年同期的22.8%上升为28.3%。

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The ratio which is used to indicate a company's ability to control its variable costs refers to the ratio of operating profit to turnover in a given accounting period. It is expressed as a percentage.

用来反映公司控制其可变成本的能力，指会计帐期内当期营运利润占当期销售总额的比率，通常以百分比表示。

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Return on Invested Capital measures a companies net operating profit as a percentage of the leverage that they are using.

换句话说， 已动用资本回报率是衡量公司运用资本产生回报情况的 …

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Taiwan Semiconductor also lowered its expectations for gross profit margin and operating profit margin by four percentage points each.

FORBES: Magazine Article

Despite a decrease in sales of semiconductor chips and TVs due to seasonal factors, an increase in profitability in display panels and mobile phones pushed up quarterly operating profit margins by 1.7 percentage points to 12.9 percent.

ENGADGET: Samsung's Q1 2012 profits nearly double year-over-year on higher margins for TVs and phones

Start with three or four key financial metrics, such as revenue, profit margin, or operating expenses as a percentage of revenue.

FORBES: It's Time For Your First Quarter Checkup