SELECT PR.PF_CODE AS 都道府県コード,
PR.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 PR
ON PR.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,
PR.PF_CODE ASC;