Thanks Phil, this is a good start...

Most appreciated

Troy.G

Thank you, that is helpful 

Sorry Sergiy, what is it you wanted to know?

Hi

Try putting the whole calculation in bracket, like this

select cast(((Qr_Respuestas / dt.total) * 100) as numeric(10,2))

also you could try

select cast(((Qr_Respuestas / dt.total) * 100) as decimal(10,2))

Also, what are the individual...