noun
rate; ratio; percentage; proportion
Used for numerical or relative comparisons, such as statistics, mixtures, or shares.
この地域の高齢者の割合は年々増えている。
The proportion of elderly people in this area is increasing year by year.
水と酢を3対1の割合で混ぜる。
Mix water and vinegar in a ratio of 3 to 1.
adverb
comparatively; relatively; contrary to expectations
Adverbial use expressing that something is more or less than expected, or that a situation is unexpectedly different. Often followed by a verb or adjective.
今日の試験は割合簡単だった。
Today's exam was comparatively easy.
彼は割合早く帰ってきた。
He came back relatively early.