net income vs percentage

net income and percentage both are nouns.

Word	Noun	Adjective	Verb	Adverb
net income	Yes	No	No	No
percentage	Yes	No	No	No

net income (noun)	percentage (noun)
the excess of revenues over outlays in a given period of time (including depreciation and other non-cash expenses)	assets belonging to or due to or contributed by an individual person or group
	a proportion in relation to a whole (which is usually the amount per hundred); ten percent