名词
中文翻译：百分比变化
同义词：
['percentage variation', 'percentage change', 'percentage adjustment', 'percentage growth']
例句：
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1. The company's sales have increased by 20% compared to last year.
与去年相比，该公司的销售额增加了20%。
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2. The price has decreased by 5% since the last update.
自上次更新以来，价格已经下降了5%。
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3. The company plans to introduce a new product with a 10% increase in price.
公司计划推出一款新产品，价格上涨10%。