how do i add percentage to a spreadsheet

[JCS]

Hi

I am trying to add VAT to a column in my spreadsheet but it doesn't seem to
like the funcion i type in, can anyone help.

 

[Bernard Liengme]

If the pre-VAT price is in A1, then the VAT is computed with =A1*17%
(change 17% to your value)
To compute the with-VAT price use =A1*(1+17%)
best wishes

 

[David Biddulph]

Tell us what formula you are trying to use, and what error message you are
getting, then we can help.