Sentence:  Written evidence that the claimant and any such attorney have agreed to the amount of the attorney 's fees shall be conclusive upon the Commission : Provided , however , That the total amount of the fees so agreed upon does not exceed 10 <WSD>per</WSD> centum of the total amount paid pursuant to the award . 
Meaning of the word marked with <WSD> tags:  a proportion in relation to a whole (which is usually the amount per hundred)