名词
中文翻译：百分率
同义词：
['percentage', 'ratio', 'percentage rate例句：1. The sales of this product have increased by 20% compared to last year.（与去年相比，该产品的销售量增加了20%。）']
例句：
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1. The sales of this product have increased by 20% compared to last year.
与去年相比，该产品的销售量增加了20%。
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2. The company's profits have decreased by 5% due to the economic downturn.
由于经济衰退，公司的利润下降了5%。
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3.The price has gone up by 10% since last month.
自上个月以来，价格已经上涨了10%。