SELECT DISTINCT
    D.PF_CODE AS CODE
    ,PF_NAME AS NAME
    ,ROUND((100.0 * SUM(D2.AMT) / SUM(D3.AMT)), 1) AS PERCENTAGE
FROM
    DRINK_HABITS D
    INNER JOIN PREFECTURE P ON D.PF_CODE = P.PF_CODE
    INNER JOIN DRINK_HABITS D2 ON D.PF_CODE = D2.PF_CODE AND D2.CATEGORY_CODE = '120'
    INNER JOIN DRINK_HABITS D3 ON D.PF_CODE = D3.PF_CODE AND D3.CATEGORY_CODE = '110'
GROUP BY
    D.PF_CODE
ORDER BY
    PERCENTAGE DESC
    , D.PF_CODE DESC
;