per cent

基本解释

If Morgan Stanley issues stock in a new company, it charges the company a commission of around seven per cent.
如果摩根士丹利为一个新的公司发行股票，它将向该公司收取大约百分之七的佣金。
He says it is too early to expect financial returns on the investments, pointing out that only about three per cent of US patents are ever licensed.
他说，现在就指望这些（专利申请的）投资产生经济回报为时过早，因为只有百分之三的美国专利最后售出了使用权。
Copper prices, for example, have fallen 23 per cent in the past two months, partly on fears over Chinese consumption of the metal, which has fallen by more than half this year.
举例来说，过去两个月铜价已经下跌了23%，这一定程度上是因为人们担心中国对该种金属的消费——今年中国的铜消费已下降逾一半。
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The nine men controlled ninety per cent of the nation's oil production.
The challenge for designers was to create a vehicle with the protection provided by an MRAP but about 25 per cent lighter.
In early 2008, Vietnam's inflation rate had risen to 25 per cent, while the country's trade deficit widened to more than $14 billion.

First, fulfil existing commitments to spend 0.7 per cent of national income on aid.
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You use per cent to talk about amounts. For example, if an amount is 10 per cent (10%) of a larger amount, it is equal to 10 hundredths of the larger amount. (%)
Per cent is also an adjective.
Per cent is also an adverb.