怎样用英语表示：A占B的比例是.

译:
A accounts for 12.7 percent of B.或
The proportion of A is 12.7% in B.
还有其它表达.如下
参与资料:
girl students accounted for 47.3 percent of total primary school enrollment.
女在校生比例占47.3％.
The proportion of working women now stands at forty percent.
现在劳动妇女的比例占40％.
The natural reserves should cover around 10% of the territory of the city.
自然保护区总面积占全市国土面积比例达到10%.
All these proportions surpass 8 percent which is the proportion covered by the population of the minority nationalities in the total population of the country.
这些比例全都高于少数民族总人口占全国总人口8%的比例.
Fairly great changes have also taken place in the rural residents' food structure.Of their staple food,the proportion of refined and coarse food grains made up 50 percent each in 1978.In 1997,however,the proportion of the former reached 81.2 percent.
农村居民的食品结构也发生了较大变化,在其主食结构中,1978年粗、细粮消费比例各为50％,到1997年,细粮消费所占比重已高达81.2％；
In the NPC and the CPPCC National Committee of successive terms,the percentage of ethnic minority representatives has far exceeded the proportion of the ethnic minority population in the national population,and each of the 55 ethnic minorities,no matter what their populations,has its own representatives.
在历届全国人大、政协中,少数民族代表和委员所占的百分比,都大大超过少数民族在全国人口中所占的比例；55个少数民族不论人口多少都有自己的代表和委员.
It wasn't an overwhelming percentage,but close to 65％.
女性比例虽没有占压倒优势,但接近65％.