Sports Lottery Issuance Act Article 6

The total prize money from the sale of the sports lottery shall not exceed 78% of the total sports lottery revenue. However, plans for operational or supporting measures proposed by the issuer and approved by the competent authority are not restricted by such stipulations.
中文原文 運動彩券發行條例第6條
運動彩券獎金支出不得超過售出彩券總金額之百分之七十八。
但發行機構提出營運維持計畫或配套措施,經主管機關核准者,不在此限。

English translation for reference only; the Chinese text prevails. Not legal advice.