occupancy rate vs percent

occupancy rate and percent both are nouns.

Word	Noun	Adjective	Verb	Adverb
occupancy rate	Yes	No	No	No
percent	Yes	No	No	No

As nouns, percent is a hypernym of occupancy rate; that is, percent is a word with a broader meaning than occupancy rate:

occupancy rate: the percentage of all rental units (as in hotels) are occupied or rented at a given time
percent: a proportion in relation to a whole (which is usually the amount per hundred); ten percent

Other hypernyms of occupancy rate include pct, per centum, percentage.

occupancy rate (noun)	percent (noun)
the percentage of all rental units (as in hotels) are occupied or rented at a given time	a proportion in relation to a whole (which is usually the amount per hundred); ten percent