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',
    PO20.TOTAL_AMT as '総人口2020年',
    round(
        cast(PO20.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 PO20
        on PF.PF_CODE = PO.PF_CODE
        and PO20.SURVEY_YEAR = 2020
        
where PO.SURVEY_YEAR = 2015
and PO20.TOTAL_AMT >= PO.TOTAL_AMT

order by 
    '人口増加率' desc
    ,'都道府県コード' asc