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# How to Calculate x% of a Number with JavaScript?

Sometimes, we want to calculate x% of a number with JavaScript.

In this article, we’ll look at how to calculate x% of a number with JavaScript.

### Calculate x% of a Number with JavaScript

To calculate x% of a number with JavaScript, we can divide `x` by 100 then multiply by the number we want to compute the percentage for.

For instance, we can write:

``````const x = 35.8
const result = (x / 100) * 10000;
console.log(result)
``````

We assign the percentage number to `x` .

Then we divide that by 100 to get a decimal number with the fraction that we want to multiply the number with.

We multiply that by 10000 to get 35.8% of 10000 and assign that to `result` .

Therefore, `result` is 3580.

### Conclusion

To calculate x% of a number with JavaScript, we can divide `x` by 100 then multiply by the number we want to compute the percentage for.

## By John Au-Yeung

Web developer specializing in React, Vue, and front end development.