Percentage calculator

Quickly and easily work out different percentages with this percentage calculator.
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Updated: Oct 11, 2022
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The Invezz percentage calculator performs the necessary basic math functions you need to work out the percentage something has increased or decreased. This can help you make informed trading decisions, and also helps put percentages into perspective so you can better manage your risk and expectations. Read on to see how our percentage calculator works, and how it can help as a trader.

How to use our percentage calculator

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You will find the following three fields in our percentage calculator, and simply filling in these fields will give you instant results.

  • What is X% of X amount?
  • X amount is what percentage of Y amount?
  • What is the percentage increase or decrease from X% to Y%?

How the percentage calculator works

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Our percentage calculator works by performing calculations instantly to give you accurate percentages based on the figures you input. Many people struggle when figuring out percentages, and this calculator makes the process straightforward and simple.

Why should I use it?

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Our percentage calculator is useful for any reason you might need to work out a percentage, but it is also specifically useful when trading.

Say you buy a stock and you let it drop 20% from your purchase price. No problem, right? Just wait for it to go back up by 20% and you’re back to even. The problem is that it doesn’t work that way. If your stock drops 20%, you need a 25% increase in its price just to get back to square one. If it goes down 33%, you need a massive 50% bounceback just to break even. 

By being able to calculate those types of percentages instantly, you’ll be more inclined to cut your losses quickly, thereby managing your risk and leaving your account in better shape for future trades.

What is a percentage? 

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A percentage is a rate or number calculated out of 100, expressed as a proportion. As an investor tracking your success on an ongoing basis, percentages tend to tell you a lot more than absolute numbers alone will.



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James Knight
Editor of Education
James is the Editor of Education for Invezz, where he covers topics from across the financial world, from the stock market, to cryptocurrency, to macroeconomic markets.... read more.