SELECT PO.PF_CODE AS 都道府県コード, PF.PF_NAME AS 都道府県名 , PO.TOTAL_AMT AS 総人口2015年, PO2020.TOTAL_AMT AS 総人口2020年
    , ROUND( CAST(PO2020.TOTAL_AMT AS REAL) / CAST(PO.TOTAL_AMT AS REAL) * 100)  
      AS 人口増加率 
FROM POPU_TRANSITION AS PO 
    INNER JOIN PREFECTURE AS PF 
    ON PF.PF_CODE = PO.PF_CODE 
    INNER JOIN POPU_TRANSITION AS PO2020 
    ON PO2020.PF_CODE = PO.PF_CODE 
AND PO2020.SURVEY_YEAR = 2020 
WHERE PO.SURVEY_YEAR = 2015 
AND  PO2020.TOTAL_AMT >= PO.TOTAL_AMT
ORDER BY 人口増加率 DESC, 都道府県コード ASC;