# 20% of 640 Pounds

### Percentage Calculator

Using this tool you can find any percentage in three ways. So, we think you reached us looking for answers like: 1) What is 20 percent (%) of 640? 2) 20 is what percent of 640? Or may be: 20% of 640 Pounds?

See the solutions to these problems below.

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## How to work out percentages - Step by Step

Here are the solutions to the questions stated above:

### 1) What is 20% of 640?

Always use this formula to find a percentage:

^{%} / _{100} = ^{Part} / _{Whole} replace the given values:

^{20} / _{100} = ^{Part} / _{640}

Cross multiply:

20 x 640 = 100 x Part, or

12800 = 100 x Part

Now, divide by 100 and get the answer:

Part = ^{12800} / _{100} = 128

### 2) 20 is what percent of 640?

This question is equivalet to: "What is 20 out of 640 as a percentage?"

Use again the same percentage formula:

^{%} / _{100} = ^{Part} / _{Whole} replace the given values:

^{%} / _{100} = ^{20} / _{640}

Cross multiply:

% x 640 = 20 x 100

Divide by 640 and get the percentage:

% = ^{20 x 100} / _{640} = 3.125%

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