[질문] 9등급으로나누는거퍼센트알려주세요

안녕하세요_9등급별퍼센트입니다. 1등급-상위4%까지/2등급-11%/3등급-23%/4등급-40%/5등급-60%/6등급-77%/7등급-89%/8등급-96%/9등급-100%