If today's youngsters are asked where they would like to have lunch, a high percentage of them will probably answer "McDonalds".

percentage 是名词，由 percent（百分比）加上后缀 -age（表示状态或数量）构成，指"比例、百分比"的意思。percent 本身来自拉丁语 per centum，意为"每一百"。 在句中指年轻人中选择麦当劳的比例很高。