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Calculated Field Percentage

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  • Calculated Field Percentage

    I have a field in a table for payroll commission which I'm trying to make a percentage. When I enter numeric as the field type, it will not let me place 2 decimals in order to use in a calculated field on the form.

    For instance: commission is 20%, but I want to format so that it has a decimal (.20). This field will be multiplied by invoice total.

    If I leave it as a regular numeric, the calculation will be incorrect because a percentage is calculated with 2 decimal places....

    How can I format this field so that it can be properly used in the calculation. (Invoice total * commission rate)

    Thanks.

  • #2
    Re: Calculated Field Percentage

    You need one field to hold the real value (.20) or to hold the value to display in the percentage (20). Either one can be calculated from the other.

    You can then choose which one to use in the calculation

    (Invoice total * commission rate)


    Ex: Real field holds .20, calculated field = real field * 100. Calculated field is placed on the form and formatted as percentage. Real field is used in commission computation.
    There can be only one.

    Comment


    • #3
      Re: Calculated Field Percentage

      Check the definition of the numeric field in the structure of the table. Have you specified the necessary number of decimal places? Instead of storing "20" in the field, store "0.20". Note that this will require a field width of 4, since you have to include a space for the decimal itself.

      Comment


      • #4
        Re: Calculated Field Percentage

        Ok, I went in and changed commission field to numeric width of 4 with 2 decimal places. When I type 0.20 into the field and move to another field, it only shows me a 0. When I type in 20, it tells me that my number is too large...

        What am I doing wrong?

        Comment


        • #5
          Re: Calculated Field Percentage

          Ok...what about using this calculated field?

          Invoice total * Commission rate (field kept with no decimal)/100


          That seemed to produce the correct result. Will this cause any problems for me?

          Comment


          • #6
            Re: Calculated Field Percentage

            Originally posted by wlk8791 View Post
            ... it only shows me a 0.
            Check the properties of the field on the form. Go to the Format tab and see how many decimal places you specified.

            Comment


            • #7
              Re: Calculated Field Percentage

              Originally posted by wlk8791 View Post
              Ok...what about using this calculated field?

              Invoice total * Commission rate (field kept with no decimal)/100


              That seemed to produce the correct result. Will this cause any problems for me?
              That will do it as well. I try to always make the expression explicit using parentheses to force the order of evaluation - even if just for clarity.


              Invoice total * (Commission rate (field kept with no decimal)/100)
              There can be only one.

              Comment


              • #8
                Re: Calculated Field Percentage

                Thank you...

                Comment


                • #9
                  Re: Calculated Field Percentage

                  Kristie, after you change the table structure, you must then set the display properties correctly in the form layout. As Steve suggests, right click the field (after putting the form in design mode) and increase the format width appropriately. You can't enter 20 because that would take 5 places:

                  Code:
                  20.00

                  Comment


                  • #10
                    Re: Calculated Field Percentage

                    The display has been the problem for two issues today....had no idea it was so important. I guess trying to learn everything at once has made me look over what seems to be small issues..Thanks for your help

                    Comment

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