Decimal to percent

How to convert a number from decimal to percent is the goal of this lesson.

In a nutshell, all you need to do is to move the decimal point two places to the right and adding the percent symbol.

Here are the steps to follow to convert a decimal to a percent

Step 1. 
Move the decimal point two places to the right. 

Step 2. 
Remove unnecessary zeros on the left of the number.

Step 3. 
Remove the decimal point that was moved two places to the right if step 2 gave a whole number. Otherwise, keep the decimal point.

Step 4. 
Add the percent sign or % to the right of the number.

Examples showing how to convert a decimal to a percent


Example #1:

Change 0.123 to a percent.

Step 1.

Move the decimal point two places to the right. This means that you will place the decimal point between the 2 and the 3.

We get 012.3.

Step 2. 
Remove any unnecessary zero(s) on the left of the number.

We get 12.3.

Step 3. 
Remove the decimal point that was moved two places to the right if step 2 gave a whole number. Otherwise, keep the decimal point.

12.3 is not a whole number, so keep decimal point.

Step 4. 
Add the percent sign or % to the right of the number.

The answer is 12.3%

Example #2:

Change 0.50 to a percent

Place the decimal point after the 0.

We get 050.

Remove the unnecessary zero and the decimal point.

We get 50

Add the percent symbol: %

The answer is 50%

Notice that there is no need to write the decimal point if it occurs at the end of the number.

Notice also that moving the decimal point to the right two places is the same thing as multiplying the number by 100. 

It is the inverse of dividing by 100 to convert to a decimal when the number is given as a percent.

Example #3:

Change 0.0000256 to a percent.

Move the decimal point two places to the right.

We get 000.00256.

Remove the unnecessary zero and keep the decimal point.

We get 0.00256

Add the percent symbol: %

The answer is 0.00256%

Did you not clearly understand the examples above? Are the steps still confusing? Take a look at the figure below summarizing the steps

Decimal to percent

Decimal to percent quiz. See how well you can make the conversion.

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