select tag,cnt_20,cnt_21,growth,ra_20,ra_21,cast(ra_21 as signed) - cast(ra_20 as signed) as ra_delta from( select tag,cnt_20,cnt_21, concat(round((cnt_21-cnt_20)/cnt_20*100,1),'%') as growth, rank() over(order by cnt_20 desc) as ra_20, rank() over(order by cnt_21 desc) as ra_21 from( select b.tag, ...