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# Percentages

## What Is A Percentage?

A fraction out of 100

## Find A Percentage Of A Number

100% = the number that you start with

1% = the number that you start with ÷ 100

Percentage of number that you want =
answer for 1% × number of percentage that you want

## Find A Percentage Of A Quantity

100% = the quantity that you start with

1% = the quantity that you start with ÷ 100

Percentage of quantity that you want =
answer for 1% × number of percentage that you want

## Find A Percentage Of An Amount

100% = the amount that you start with

1% = the amount that you start with ÷ 100

Percentage of amount that you want =
answer for 1% × number of percentage that you want

## Find A Percentage Of Something

100% = the something that you start with

1% = the something that you start with ÷ 100

Percentage of something that you want =
answer for 1% × number of percentage that you want

## Find A Percentage Increase

100% = the amount that you start with

1% = the amount that you start with ÷ 100

Percentage increase =
answer for 1% × number of percentage increase

Total after increase =
original amount plus percentage increase calculated

## Find A Percentage Sales Tax

100% = the amount that you start with

1% = the amount that you start with ÷ 100

Percentage sales tax =
answer for 1% × number of percentage tax

Total after tax added =
original amount plus percentage tax calculated

## Find A Percentage Profit

100% = the amount that you start with

1% = the amount that you start with ÷ 100

Percentage profit =
answer for 1% × number of percentage profit

Total after profit added =
original amount plus percentage profit calculated

## Find A Percentage Decrease

100% = the amount that you start with

1% = the amount that you start with ÷ 100

Percentage decrease =
answer for 1% × number of percentage decrease

Total after decrease =
original amount − percentage decrease calculated

## Find A Percentage Discount

100% = the amount that you start with

1% = the amount that you start with ÷ 100

Percentage discount =
answer for 1% × number of percentage discount

Total after discount =
original amount − percentage discount calculated

## Find A Percentage Loss

100% = the amount that you start with

1% = the amount that you start with ÷ 100

Percentage loss =
answer for 1% × number of percentage loss

Total after loss =
original amount − percentage loss calculated

## Express One Number As A Percentage Of Another Number

$\large \frac{one number}{another number} × \frac{100}{1}$

## Express One Quantity As A Percentage Of Another Quantity

$\large \frac{one quantity}{another quantity} × \frac{100}{1}$

## Change A Percentage To A Fraction

Put the percent that you have over 100

$\large \frac{percent}{100}$

## Change A Percentage To A Decimal

Put the percent that you have over 100

$\large \frac{percent}{100}$

and then divide by the 100

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