Filter Zillow results by ratio of price to zestimate?

Often I want to look for Zillow results where the price is significantly below Zillow’s estimate (aka “Zestimate”). Is there a way to do that? Ideally I would prefer to do it in a way that does not require too much coding skill. I am also interested in doing this on other similar sites.

Just a warning to others: The Zestimate is often VERY far off from any reasonable sale price expectation. Be careful out there. 🙂