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Calculating Percentages in your head

Discussion in 'Investing' started by DaddyatorG, Sep 7, 2020.

  1. DaddyatorG

    DaddyatorG New Member

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    Anyone have any good tips or tricks? To keep going back to the calculator is time consuming.
     
  2. TomB16

    TomB16 Well-Known Member

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    Yeah. It's difficult. That's why I stopped tipping decades ago. Well, that and I'm cheap as f*.
     
  3. TomB16

    TomB16 Well-Known Member

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    I'm just kidding. :biggrin:

    Not really sure what you're asking. Can you give us an example of what you're trying to calculate?

    I suggest creating a spreadsheet with all of your numbers. The process of creating the spreadsheet will help you understand how cash flows through your portfolio better than any numbers could.
     
  4. DaddyatorG

    DaddyatorG New Member

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    Say a stock is at 7.74 and it goes up to 8.63. What is the percentage? [answer: 11.5%]

    Say a stock is at 16.54 and it goes down to 15.01. What is the percentage? [answer: 10.2%]

    I did those both on a calculator. Is there an easy/tricky way to make reasonable estimations in your head?
     
  5. Jwalker

    Jwalker New Member

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    I think of increases in terms of intervals of 10% (when I’m doing it in my head) as it’s easier to guesstimate. For example 7.74 to 8.63 is approximately $.90 increase. A $.774 would be 10% so I know it’s approximately 10 - 12%. Simple and easy but not going to pin a needle on it by any means. Hope that helps.
     
    T0rm3nted and Onepoint272 like this.
  6. DaddyatorG

    DaddyatorG New Member

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    That sounds good to me. With a little practice I should be able to get that down, and I'm going to work on it.
     

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