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Excel/excel get bacnk the % amount


QUESTION: Sir I have the figure let 110 that is already added 10% which formula can give 100 speratey and 10 seprately i mane to say that after geting result my main figure i.e remail the same.

thank you in advance for help

ANSWER: Hello Sandi,

Thank you for your question.

If I have understood your question correctly, you have a number that has 10% added into it already and you are wanting to determine the original number before the 10% was added to it.  Is that correct?  If so, the formula below will provide the answer you desire.

This is really more of a math question than an Excel question, but Excel can calculate the answer for you.

If the number with the 10% added to it is in A1, then this formula will calculate the original amount before the 10% was added to it: =A1/1.1.

To determine the 10% that was added to the amount in A1, use this formula: =A1/11.

For example if your number is 110, then the first formula will give you the answer of 100, which was the number before the 10% was added to it, and the second formula will give you the answer of 10, which was the amount added to the original number.

I hope this helped.  



---------- FOLLOW-UP ----------

QUESTION: Dear sir,

Thank u for your help i am fail to calculate different type %age values 15%,25%,35,48% etc by same formula kindly advice

thank you once again

Hello Sandi,

For different percentages use this formula:

For 15%: =A1/1.15
For 25%: =A1/1.25
For 35%: =A1/1.35
For 48%: =A1/1.48

You should see a pattern here.  Take the number and divide it by 1.xx, where xx is the percentage.  For example, for 33%, divide the number by 1.33.

Hope this helped.
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David W. Cofer


I can answer MS Excel questions regarding Excel Formulas, Functions, Worksheets, Data Validation, Conditional Formating, Lookup, Pivot Tables and Logic Functions, as well as other general Excel questions. I do not answer questions regarding Charts, Macros, Visual Basic or Programming. Please include the version of Excel you are using. That helps me provide an answer that will work on your system. Also, do not submit duplicate questions to several experts at the same time. If several of us are answering the same question at the same time, it is a waste of time and resources. If the first expert you ask does not provide an acceptable answer, then ask a second expert. As we are volunteers, our time is valuable, and it is a waste of time for 5 of us to be working on the same question at the same time. Thanks for your understanding.


I have used MS Excel for over 20 years and am familiar with all versions back to 1993. I currently use Excel 2013 and assist those using versions going back to 2000. I use Excel extensively at both work and home.

I hold a B.A. degree in Psychology.

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