请问“同比下降”怎么翻译

很多种说法的啊，只要意思到位就可以了

dropped by 。。。。 from last year's same period.
decline。。。 in last year's same period.
decline 。。。。comparing with the same period of previous year.

你可以看下下面的句子，供你参考哦

The exfactory price of industrial goods dropped by 2.9 percent.
工业品出厂价格同比下降2.9%。

The consumer prices dropped by 0.8 percent.
居民消费价格同比下降0.8%。

Of this, the price of the means of production and the means of livelihood decreased by 3.1 percent and 2.2 percent respectively.
其中，生产资料价格同比下降3.1%，生活资料出厂价格同比下降2.2%。

In the first two months, the losses of loss-making enterprises dropped by 12 percent, 8.2 percentage points greater than the margin of decline in last year's same period.
1-2月份亏损企业亏损额同比下降12%，减亏幅度加大8.2个百分点。

In the first nine months, the retail price of commodities dropped by 1.4 percent from last year's same period.
前三季度，商品零售价格同比下降1.4%。

Of this, State-owned and State holding enterprises reaped 152.6 billion yuan, showing a lower decline rate of 4.1 percent.
其中，国有及国有控股企业实现利润1526亿元，同比下降4.1%，降幅比上半年明显缩

According to the probe and analysis of China Trade Information Center, the profit indicator of national department stores (including 84 retail listing companies) dropped 14.3% and the coverage of loss increased 18.5% comparing with the same period of previous year.
据中华全国商业信息中心的调查分析，1999年1-11月，全国重点大商场(含84家零售业上市公司)利润指标同比下降14． 3％，亏损面比上年同期增长18． 5％。

Meanwhile, the import of oil products was 20.352 million tons, 5.1 percent down as compared to the previous year.
成品油进口量为2035.20万吨,同比下降了5.1％。

Despite a healthy performance by the rest of DaimlerChrysler (Mercedes-Benz, trucks, finance and so on), the firm's net earnings in the final quarter of 2006 plunged to a meagre 577m euro ($724m), fully 40% lower than a year earlier.
尽管戴-克在其他方面业绩不俗（梅赛德斯-奔驰、卡车、金融等），但公司2006年第四季度的净收益狂跌至5亿7700万欧元（7亿2400万美元），同比下降足有40%。

In America, home prices suffered a 3.2% year-on-year price drop during the second quarter, according to the Standard Poor's/Case-Shiller Home Price Indices
在美国，根据标准普尔房产价格指数，今年第二季度房屋价格较去年同比下降3.2%。

Come down with the ratio

decrease comparing with the same period last year