how create price history table in selected product for website?

I have see the website www.dealdaddy.shop this website is blog type but it has 2 different features. these are

1. it has comparing product system
2. It has selected product past prices are shown like below image.

and I am trying to develop like that graph. if you can please tell me how that is create for my website.

selected product price history table Image

If you want to check : https://www.dealdaddy.shop/