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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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