in query DATA_QRY
i had two field               CummulativeLate (min): Val(Nz(fnCummulativeLate([id],[uotono]),0))
and 
cummulativeealy(min): Val(Nz(fnCummulativeealy([id],[uotono]),0))
and this fields as you know are cumulative per employee 
 i need new filed with name percentage deducted
this field with formula as attached excel  
regards