Video and Examples
All fractions and decimals can be turned into percentages.
Decimals to percents (D > P)
To turn a decimal into a percent you must remember that a decimal can be turned into a fraction. Then after the decimal has been turned into a fraction, you can rename the fraction so its denominator is 100. 
Example 1: Convert 0.7 into a percent.
Method 1: Change into a fraction, then rename.  Method 2: Move the decimal to spaces to the right. 
SHORTCUT ALERT! Notice in the example to the left the decimal moved to places to the right. This will happen every time, so you can use it as a shortcut like this... 
Example 2: Convert 0.92 into a percent.
Change into a fraction, then rename.  Move the decimal two spaces to the right. 
Fractions to percents (F > P)
There are two ways to turn a fraction into a percent:
 Rename the fraction so that it has a denominator of 100.
 Change the fraction into a decimal by dividing, and then change the decimal into a percent.
Rename
Divide
Example 3: Convert into a percent.
Method 1: Rename denominator  Method 2: Divide 
For this example, both methods are easy to use. Sometimes, however, one method is easier than the other as is the case in Example 2.
Example 4: Convert into a percent.
Method 1: Rename denominator  Method 2: Divide 
In example 2, Method 1 was probably the easier method. Now try example 3.
Example 5: Convert into a percent.
Method 1: Rename denominator  Method 2: Divide 
In this example, Method 2 was probably the easier method, since it is not easy to change the denominator of 8 into a 100.
SelfCheck
Question 1 Convert 0.9 into a percent.

[show answer] 
Question 2

[show answer] 
Question 3

[show answer] 
Question 4 Convert 0.125 into a percent.

[show answer] 