That depends on what it sold for, the shape it was in, it's square footage , lot size and location on the street.
All things being equal, then it would affect the value of homes on that street, because the listing agent and more importanly the BUYING agent will use this in either pricing or bidding on a property on the same street. So you can expect a bid close to what the Foreclosed home sold for. There are NO percentages I can give you because there ARE quite a few variables in pricing a home.
Hope this helps, if you have more specific questions you would like help with feel free to contact me.