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To find what percent of number y is number x, you should divide number x by number y. Then multiply your result by 100 and this will give you the percentage. Your formula should look like x/y * 100.
To find what number of x is a total of some percentage, you should divide the known percentage by 100 and multiply your result by number x. Your formula should look like y%/100 * x.

Percentages - An Introduction | SkillsYouNeed

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In mathematics percentages are used to describe parts of a whole – the whole .... Sometimes it is useful to be able to work out the actual percentages of a whole.

Percentage Calculator

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Percentage Calculator is a free online tool to calculate percentages. What is % of ? %. is what percent of ? %. What is the percentage increase/decrease from to

How to calculate percentages - HelpingWithMath.com

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The guidance below will help you work through percentage calculation problems ... #3: Calculating with Percent e.g. 6 out of 8 is what % and 15 is 30% of what?

Percentage Calculators - Math.com

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Free math lessons and math homework help from basic math to algebra, geometry and beyond. Students, teachers, parents, and everyone can find solutions to ...

3 Easy Ways to Calculate Everyday Percentages - wikiHow

www.wikihow.com/Calculate-Percentages

Let's say we want to find out the percentage of the jar that is taken up by the 485 ... The opposite of a percent is 100% minus the percent you are working with.

How do you work out the percentage of something? | Reference.com

www.reference.com/math/work-out-percentage-something-f7692da0ca06542e

To calculate percentage, divide the number that is to be expressed as a percentage by the total or whole. The resulting number is then multiplied by 100 to ...

How do you work out percentages without a calculator? | Reference ...

www.reference.com/math/work-out-percentages-calculator-8be14675e72be0eb

A calculator is always helpful when determining percentages, but you can easily compute percentages without a calculator. A pencil and paper might be helpful ...

www.ask.com/youtube?q=Working Out Percentages&v=TyXH48XV3JQ
Feb 16, 2009 ... This video will show you how to work out basic percentages using just pen, paper and your brain.

BBC - GCSE Bitesize: Finding percentages

www.bbc.co.uk/schools/gcsebitesize/maths/number/percentagesrev1.shtml

'Percent' means 'out of 100'. ... Often, in real life - and maths exams - you must find a percentage of a ... Work out the cost of the VAT if it is charged at 20%.