割合
わりあいRate, ratio, proportion
N4noun·wariai
How to remember it
From 割る (to divide) — a "division" gives you the ratio or proportion.
Example sentences
合格の割合は去年より高い。
ごうかくのわりあいはことしよりたかい。
The pass rate is higher than last year.
男女の割合はほぼ同じだ。
だんじょのわりあいはほぼおなじだ。
The ratio of men to women is about the same.
Usage
Adverbial 割合に means "comparatively, rather" (e.g. 割合に早い).
Related words
割る割合に比率百分率