You use per cent to talk about amounts. For example, if an amount is 10 per cent (10%) of a larger amount, it is equal to 10 hundredths of the larger amount. 百分数 (通常用%表示)
numeral [百分数词]百分之…,百分数
Sixteen per cent of children live in poverty in this country. 这个国家百分之十六的孩子生活在贫困中。