Example: 9 out of 10 people liked this movie. Here are the top 25 sites out of 250.

You could omit "out". Of the 250 considered, the top 25 are listed.

thank you so much!

情让我给你一个有用的小建议。"How to understand?" 就是中法英文， Chinglish. 正确的英文是 “How should we understand this?" 还是“How are we to understand this?"