SELECT DISTINCT PT.PF_CODE AS 都道府県コード,
    PR.PF_NAME AS 都道府県名,
    PT15.TOTAL_AMT AS 総人口2015年,
    PT20.TOTAL_AMT AS 総人口2020年,
    ROUND(
        CAST(PT20.TOTAL_AMT AS REAL) / PT15.TOTAL_AMT * 100,
        0
    ) AS 人口増加率
FROM POPU_TRANSITION AS PT
    INNER JOIN PREFECTURE AS PR ON PT.PF_CODE = PR.PF_CODE
    INNER JOIN (
        SELECT P.PF_CODE,
            P.TOTAL_AMT
        FROM POPU_TRANSITION AS P
        WHERE P.SURVEY_YEAR = 2015
    ) AS PT15 ON PT.PF_CODE = PT15.PF_CODE
    INNER JOIN (
        SELECT P.PF_CODE,
            P.TOTAL_AMT
        FROM POPU_TRANSITION AS P
        WHERE P.SURVEY_YEAR = 2020
    ) AS PT20 ON PT.PF_CODE = PT20.PF_CODE
ORDER BY 人口増加率 DESC,
    都道府県コード ASC