ANSWER:

The question is not clear.

If the meat was not slaughtered Islamicly or it was pork, it is prohibited to eat whether the source of buying it was halal or haram.

But if you mean the food itself is halal but the money that was used to buy it belongs to people working in interest based banks, it is halal to consume. 

Is it permissible to eat non halal food from bank workers home,instead can we give our money to them and eat in those homes.is it permissible to eat these kind of ways. It’s halal or haram