SELECT 
    P.PF_CODE AS 都道府県コード,
    P.PF_NAME AS 都道府県名,
    PT.TOTAL_AMT AS 総人口2015年,
    PT2.TOTAL_AMT AS 総人口2020年,
    ROUND(CAST(PT2.TOTAL_AMT AS REAL) / CAST(PT.TOTAL_AMT AS REAL) * 100) as rate
    
    FROM POPU_TRANSITION AS PT
    INNER JOIN PREFECTURE AS P ON PT.PF_CODE = P.PF_CODE
    INNER JOIN POPU_TRANSITION AS PT2 ON PT2.PF_CODE = PT.PF_CODE AND PT2.SURVEY_YEAR = 2020
WHERE PT.SURVEY_YEAR = 2015
AND PT2.TOTAL_AMT >= PT.TOTAL_AMT
ORDER BY rate DESC, P.PF_CODE ASC