#### Need help to develop a % formula

```Greetings,

I'm hoping someone may be able to help me.

I have developed a workbook to track my portfolio on a weekly basis. One
component of my portfolio is my "Line of Credit" which always contain
negative values.

For example, last week I had a -\$5,000 balance and this week I have a
-\$6,000 balance. The week over week change is -\$1,000 or -20%.
Presently, my workbook correctly reflects the -\$1,000 weekly change but
shows the percentage change as a positive (rather than a negative) 20% weekly
change. The formula for weekly % change that I am using is as follows:
=+(B421-B420)/B420   (where B421 is this week's negative balance of -\$6,000
and B420 is last week's negative balance of -\$5,000.)

Could you please tell me how to change the formula (or anything else) so
that my workbook will reflect the -20% weekly change?

By the way, the formula I am using to determine my \$ weekly change is simply:
=+B421-B420

Thank you.

```
 0
Utf
1/10/2010 5:55:01 PM
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```Firstly you don't need a + at the beginning of your formulae.
=+(B421-B420)/B420   is the same as =(B421-B420)/B420
=+B421-B420 is the same as =B421-B420

If you want to change the sign of your answer, change =(B421-B420)/B420 to
=(B420-B421)/B420 or =(B421-B420)/-B420 or  =-(B421-B420)/B420 or
=(B421-B420)/ABS(B420) or ...

Note that your current formula is correctly showing the change a percentage
of the original value.
-\$1000 is indeed 20% of -\$5000, not -20%, but if you want -20%, just change
the sign as shown above.
--
David Biddulph

cajun-bob wrote:
> Greetings,
>
> I'm hoping someone may be able to help me.
>
> I have developed a workbook to track my portfolio on a weekly basis.
> One component of my portfolio is my "Line of Credit" which always
> contain negative values.
>
> For example, last week I had a -\$5,000 balance and this week I have a
> -\$6,000 balance. The week over week change is -\$1,000 or -20%.
> Presently, my workbook correctly reflects the -\$1,000 weekly change
> but shows the percentage change as a positive (rather than a
> negative) 20% weekly change. The formula for weekly % change that I
> am using is as follows: =+(B421-B420)/B420   (where B421 is this
> week's negative balance of -\$6,000 and B420 is last week's negative
> balance of -\$5,000.)
>
> Could you please tell me how to change the formula (or anything else)
> so that my workbook will reflect the -20% weekly change?
>
> By the way, the formula I am using to determine my \$ weekly change is
> simply: =+B421-B420
>
> Thank you.

```
 0
David
1/10/2010 6:03:42 PM

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