You mean on the last column? Do you mean
SELECT top 12 CONVERT(VARCHAR, DATEADD(month, DATEDIFF(month, 0, fldStart), 0), 106) as fldDate ,sum([fldClosedOnTime]),sum([fldassignedclosed]), 1.0*SUM([fldClosedOnTime])/Sum([fldassignedclosed]) FROM [KPI].[dbo].[viewSAPrepProjectBSC] where DATEADD(month, DATEDIFF(month, 0, fldStart), 0) <= DATEADD(month, DATEDIFF(month, 0, getdate()), 0) group by DATEADD(month, DATEDIFF(month, 0, fldStart), 0) order by DATEADD(month, DATEDIFF(month, 0, fldStart), 0)