SELECT
    PT.PF_CODE AS 都道府県コード
    ,PF.PF_NAME AS 都道府県名
    ,PT.TOTAL_AMT AS 総人口2015年
    ,PT2020.TOTAL_AMT AS 総人口2020年
    ,ROUND(
        CAST(PT2020.TOTAL_AMT AS REAL)/
        CAST(PT.TOTAL_AMT AS REAL)
        *100
    )AS 人口増加率
FROM
    PREFECTURE as PF
    INNER JOIN POPU_TRANSITION AS PT
     ON PF.PF_CODE=PT.PF_CODE
    INNER JOIN POPU_TRANSITION AS PT2020
     ON PT.PF_CODE=PT2020.PF_CODE
     AND PT2020.SURVEY_YEAR=2020
    
WHERE
    PT.SURVEY_YEAR=2015
     AND PT2020.TOTAL_AMT >= PT.TOTAL_AMT
ORDER BY
    人口増加率 DESC
    ,都道府県コード ASC