Sentence:  It is interesting that , although the percentage of married students is not appreciably higher at Brooklyn than elsewhere - about 30 per cent of the women and 25 <WSD>per</WSD> cent of the men in the graduating class - the anxiety of the unmarried has puffed up the estimate . 
Meaning of the word marked with <WSD> tags:  a proportion in relation to a whole (which is usually the amount per hundred)