20 percent
Used for expressing a 20% proportion, discount, or ratio. 割 is a unit meaning 10%, so 二割 is 2 × 10%.
This item is 20% off.
参加者の二割が女性だった。
Twenty percent of the participants were women.
This year's sales increased by 20% compared to last year.
The clerk gave me a 20% discount on the sweater's price.
I bought this bag at a 20% discount.
割 alone is the general unit meaning 10%, so learners may mistake it for 二割, which specifically means 20% (two units of 割).
Standard kanji spelling for 20 percent.
Numerical variant; common in horizontal writing and casual contexts.
Compound of 二 (two) and 割 (unit of 10%). The 割 unit derives from the verb 割る (to divide), referring to a tenth part.