英语里面 百分之...应该怎么使用啊？

Question

求大神 系统的讲解一下
比如： 本季度比上个季度销售量增加/降低30%
90%的产品出现问题
这一部分占到整体的80%
……
等等
O(∩_∩)O谢谢

Answer 1

说增加或降低的幅度，一般在动词后面用by;
说增减或降低到的数量，一般在动词后面用to,
说一个东西的比例，一般在比例数量的后面用of.
例如，
the quantity of sale in this quarter increases/reduces by 30% comparing to last quarter
90% of the products have problem
this part occupies 80% of the total

Answer 2

In this quarter the sales has increased / decreased thirty percent than last season.
and ninety percent of the products has the quality issue
this part has the eighty percent of all.

Answer 3

楼主你好，

英语里面百分比一般是这样表达，
XXpercent of XX

希望可以帮到你。

Answer 4

the sales volume of current season has been increased 30 percent rispect to the last season
90 percent of the products get some problems.
this part occupies 80 percent of the entirety。

Answer 5

This quarter than last quarter sales volume increase/decrease 30% product problems which part occupies the whole 80%就是这样，希望能帮到你～

Answer 6

你好，百分比直接翻译就行了，比如你说的30%就可以说thirty percent，因为percent就是百分的意思。
下面的可以翻译为，The sales of this quarter have increased by thirty percent than the former one.