pct vs percent

pct and percent both are nouns.

Word	Noun	Adjective	Verb	Adverb
pct	Yes	No	No	No
percent	Yes	No	No	No

As nouns, pct and percent are synonyms defined as:

pct and percent: a proportion in relation to a whole (which is usually the amount per hundred); ten percent

Other synonyms of pct include per centum, percentage.

pct (noun)	percent (noun)
a proportion in relation to a whole (which is usually the amount per hundred); ten percent	a proportion in relation to a whole (which is usually the amount per hundred); ten percent