Chartjs

Check out their website.

Source Code

You can find the source code for the above chart here.

Offline Use

Get it from npm and then copy the dist folder from node-modules and paste it in the directory where the page is located. Then, replace the source in the script tag

<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.8.0/Chart.min.js"></script>

with

<script src="/dist/Chart.js"></script>