HI i need apply this formula to show a pocentage

{@Total}= ({CON_ASPECTO.Expr1001} * 100) / {?Num}

The {@Total} is where i want so save the number
{CON_ASPECTO.Expr1001} is a number field in a Access DB
{?Num} is a parameter field wich i pass to crystal in VB6

It looks like:

Total = (2 * 100) / 5

When i check for this formula the error shows

"A STRING IS REQUIRED HERE"

Can you post the correct formula?

Thanks