select 
    p.PF_CODE CODE,
    p.PF_NAME NAME,
    ROUND(
        sum(dh2.AMT) * 100.0 / sum(dh1.AMT), 
        1
    ) PERCENTAGE
from
DRINK_HABITS dh1 
    inner join DRINK_HABITS dh2 on dh1.PF_CODE = dh2.PF_CODE 
    inner join PREFECTURE p on dh1.PF_CODE = p.PF_CODE
where dh1.CATEGORY_CODE = '110' 
    and dh2.CATEGORY_CODE = '120'
    and dh1.GENDER_CODE IN ('2', '3')
group by p.PF_CODE, p.PF_NAME
order by PERCENTAGE desc, CODE desc