Is it possible to sort items by discount % or price in Zepto or instamart?

I want to know if there is any way available to sort items by discount % or price in Zepto or instamart. There are so many deals/ loots posted but I don't see that at my pincode. If I can sort it by discount % or price, I would be able to find items that are available at loot prices at my pincode. Also, how do people come to know that there is any particular item or category available at loot prices in their location on any particular app??

Thanks in advance