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
