Sentence:  In all other States it is the difference obtained by subtracting from 100 the result obtained in <WSD>item</WSD> 4 above ; except that no State shall have a Federal share less than 50 % nor more than 70 % . 
Meaning of the word marked with <WSD> tags:  a distinct part that can be specified separately in a group of things that could be enumerated on a list