How to display a percentage discount?

Question

Django

The Product model has two fields: regular price and discounted price. It is necessary to do something so that if there is a discount, the percentage of the discount is also displayed. I think that you need to add a function to the model that will perform mathematical operations, and display the result in a new field of the model. Can this be done in a better way?

Answer 1

It is possible, at the stage of editing the price of the product, to record 2 prices and immediately calculated%