请问折扣的英语表达方式这样对吗?

题目

请问折扣的英语表达方式这样对吗?
八八折eight 20% discount 八折或以上 20% discount or above 九五折（折上折）nine 50% discount(to fold booklet) 九八折（折上折）nine 20% discount(to fold booklet) 购买八折以下商品可享受九八折（折上折）优惠. Purchases below the 20% discount the commodity to be possible to enjoy nine 20% discount (to fold booklet) to give preferential benefit.

答案

twelve percent off 八八折 be twenty percent of八折 twenty percent off or zbove八折或以上 The purchase of the following goods can enjoy a 2% discount on (discount-on-discount) concessions.