per cent

基本解釋

If Morgan Stanley issues stock in a new company, it charges the company a commission of around seven per cent.
如果摩根士丹利為一個新的公司發(fā)行股票，它將向該公司收取大約百分之七的傭金。
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.
他說，現在就指望這些（專利申請的）投資產生經濟回報為時過早，因為只有百分之三的美國專利最后售出了使用權。
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.
舉例來說，過去兩個月銅價已經下跌了23%，這一定程度上是因為人們擔心中國對該種金屬的消費——今年中國的銅消費已下降逾一半。
blog.sina.com.cn

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.
FORBES: May I Propose A Deal To The Clerics? I'll Not Talk About God And They Don't Talk About Economics?

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.