这些考生的总体百分位排名占第21位。就是说，79%的应试儿童比他们考得好。

Overall these students rank in the 21st percentile on the tests—that is, they did worse than 79 per cent of all children taking the test.

《牛津词典》

如果您的孩子所在位置超过85百分位，迅速解决该问题是十分重要的。

If your child is over the 85th percentile, it is important to address the problem quickly.

youdao

这项服务还提供了一个测试和游戏的积分系统，并能显示出考生得分在群体中占第多少个百分位。

The service offers a point system for tests and games, and displays student scoring in terms of community testing percentiles.

youdao