Sentence:  It is interesting that , although the <WSD>percentage</WSD> of married students is not appreciably higher at Brooklyn than elsewhere - about 30 per cent of the women and 25 per 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)