This is the 6739th most frequent Japanese word.
パーセント
"パーセント" means "percent" in English.
Here, 'パーセント' is used as part of '10パーセント', meaning '10 percent', to denote a percentage discount.
この商品は表示価格の10パーセント引きで購入できます。
You can buy this product at a 10 percent discount from the listed price.
In this sentence, 'パーセント' represents a portion out of a hundred, indicating the satisfaction rate observed.
アンケート結果によれば、満足度は90パーセントでした。
According to the survey results, the satisfaction rate was 90 percent.
Here, 'パーセント' is used quantitatively to express part of a total population agreeing to an opinion.