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Math Help - How to find the figure from knowing the original figure and percentage increase

  1. #1
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    How to find the figure from knowing the original figure and percentage increase

    Hello all,

    This is probable really simple for most of you but I need to work something out and wondered if someone could lend a hand please.

    I have a figure. 163

    I need to know a 12.3% increase of 163. I don't have any other numbers you see, that's why I'm doing the sum.

    7. 163 (+12.3%)
    6. --- (+10.4%)
    5. --- (+8.5%)

    And so on... I just can't for the life of me figure out how to find the figure that 12.3% more than 163 is. I presume I need to convert into decimals or something?

    Any help greatly appreciated.

    Thanks
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  2. #2
    MHF Contributor Unknown008's Avatar
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    Since you are increasing it by a certain percentage, just multiply it by (100 + percentage)/100.

    Eg.

    Increase 163 by 12.3%:

    163 \times \dfrac{100 + 12.3}{100} = 183.049

    Do the same for the rest.

    In case it's a decrease, remove the percentage from 100.
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  3. #3
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    That is brilliant, you're a life saver.

    Thank you ever so much.
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  4. #4
    MHF Contributor Unknown008's Avatar
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    You're welcome
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