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Formula to work out 0.5%

  1. #1
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    Formula to work out 0.5%

    Hi Peeps

    could you help me out?

    I need to know a formula to work out taking away 0.5% of a number?

    i.e. 274 - 0.5% = ??

    Many thanks!
    Last edited by techteam; 08-02-2012 at 09:45 AM.

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    Re: Formula to work out 0.5%

    Do You mean this?
    Formula: copy to clipboard
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    a1 = 274
    b1 = 0,5%
    Regards

    tom1977

    If You are satisfied with my solution click the small star icon on the left to say thanks.

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    Forum Expert Fotis1991's Avatar
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    Re: Formula to work out 0.5%

    Hi

    Maybe

    =A1/100.5
    Regards

    Fotis.

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    Re: Formula to work out 0.5%

    Quote Originally Posted by Fotis1991 View Post
    Hi

    Maybe

    =A1/100.5
    Don't think it will work that way . Tom's formula is correct

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    Re: Formula to work out 0.5%

    Why? Works for me!

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    Re: Formula to work out 0.5%

    Because

    100*.995 = 99,5
    100/100.5=99,5024876


    EDIT corrected numbers
    Last edited by Pepe Le Mokko; 08-02-2012 at 08:55 AM.

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    Re: Formula to work out 0.5%

    Thanks!

    However, I've put this formula in and it doesnt make sense to me...

    so, what I'm doing is...

    475+6.5% = 505.88
    475+7% = 508.25

    so there is a difference of 0.5% (i.e. 6.5 and 7)

    So what I want the sheet to do, is tell me what 475 will be minus 0.5%

    The formula you gave me says that 475-0.5% = 505.71

    But... 508.25(7%) minus 505.88(6.5%) = 2.38

    If, I take 2.38 away from 508.25 i get .. 505.88 ...


    So Ive got two answers... the formula says 505.71 ... but my manual calculation says 505.88

    (maybe its just my bad maths!!)

    Can anyone help? which one is correct?

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    Re: Formula to work out 0.5%

    How did you arrive at this?

    The formula you gave me says that 475-0.5% = 505.71
    475*0.5% is indeed 2.375 rounded off to 2.38
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    Re: Formula to work out 0.5%

    Ah, sorry, yes, from the firt post

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    Re: Formula to work out 0.5%

    You should avoid writing equations like
    475+6.5% = 505.88
    They are confusing and utterly incorrect ( except if you mean 475+0.065 which is of course 475.65)

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    Forum Expert Fotis1991's Avatar
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    Re: Formula to work out 0.5%

    Quote Originally Posted by Pepe Le Mokko View Post
    Because

    100*.995 = 99,5
    100/100.5=99,5024876

    EDIT corrected numbers
    Difficult day! Apologize for this!

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    Re: Formula to work out 0.5%

    Quote Originally Posted by Pepe Le Mokko View Post
    You should avoid writing equations like They are confusing and utterly incorrect ( except if you mean 475+0.065 which is of course 475.65)
    OK, now I am confused lol ....

    I only wrote it like that to make it easier to understand what I'm trying to do. I basically cannot understand which answer is correct... 505.71 or 505.88 ... the formula I was advised to use is throwing out a different answer to one I do manually? theres only 0.17 difference between the two awnsers, but I cant figure out why?? (starts pulling hair out) lol
    Last edited by techteam; 08-02-2012 at 09:18 AM.

  13. #13
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    Re: Formula to work out 0.5%

    Please read post #8

  14. #14
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    Re: Formula to work out 0.5%

    505.875 (rounded off to 505.88) is the right answer.

    What formula are you using to arrive at 505.71?

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    Re: Formula to work out 0.5%

    I'm lost!

    =ROUND(A1/(1+0.005),2)

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