# Formula Calculation

1. ## Formula Calculation

My issue is probably straight forward, but, I cannot tell if the software is at issue or I need a new formula(condition).

I am using an accounting software program called Maestro. It uses Excel formulas in the background when allowing to change a column or row calculation.

In this case, this is the scenario:

The formula I have created:

[PURCHASE AMOUNT]-([PURCHASE AMOUNT]*.10)
EG: 23000 - ( 2300 ) will calculate to 20700 This is okay
but if I put in
a negative value -23000 - (-2300*.10) = (25,300) Adds instead of deduction even with ( ) bracket.

Is there another way of doing this or am I doing it all wrong?

Thank you to all.

2. ## Re: Formula Calculation

Is it perhaps doing the calculation before apply the negative at the original number? So -(23000 - (-2300))? If you are able, maybe put the original number in parenthesis.

3. ## Re: Formula Calculation

In Excel, with -23000 in A1, =A1 - A1*0.1 gives -20700. I assume that is what you want.
So it's definitely with your software so will be hard to fix here. Your program isn't doing proper math. Some options if Excel Functions are available to you

-(ABS([PURCHASE AMOUNT])-ABS([PURCHASE AMOUNT]*0.1))
Maybe play with some IF statements or with different parentheses configurations.

4. ## Re: Formula Calculation

Thanks all, I think I have to agree with ChemitB, the software is not doing proper math. I will be contacting the software company. Thanks again.

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