The similar phenomenon took place in the two courses of social science and commercial, both decreased by 70% and increased by 85% respectively.

差不多的状况发生在社会科学与商务这两门课程上，两者分别出现了70%的下降和85%的增长。

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Now the organization estimates the value of American recyclables has decreased by 50 to 70 percent.

而据该协会估计，现在的总值下降了50%~70%。

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MIC was decreased by inhibitory of efflux pump in 70% resistant bacteria.

应用外排泵抑制剂利血平后，70%诱导耐药菌mic有明显下降。

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Based on Dow Jones Newswires' calculations, prices in the 70 cities covered by the city decreased by 0.22% on average in December from a month earlier, compared with a 0.17% decrease in November and a 0.13% increase in October.

WSJ: China Sees Drop in Property Prices