While LucarioMaster448 is correct in that we need those, Hidden Power and Potential are not explicitly necessary.
Unless some of these things are not known. Then they'd help a lot.
The main things we need to know before we can answer this are its Level, EVs, and Nature.
Will update if necessary.
(If you don't know the EVs, find a reset bag in the Super Training PokeNav app and then replace these stat values with whatever the reset values are. Reset Bags are relatively rare, so it may take you a while to find them.)
In the future, it's best to check IVs when freshly caught so you can see if the IVs are relatively decent. (Bred Pokemon are another story that I'll put in if you want later.)