Black is well ahead in development & it is not so easy for White to find good squares for his pieces, especially the DSB. Also, Black can play ...Nc4 & almost certainly get the Bishop-pair of it, if not more. Also, he can even consider maneuvers like ...Ra8-a5-h5 at some point.
In other words, Black has enough play for his pawn minus.
The engine says that this position is equal but I don't really understand why. I'm not really paying much attention to the engine because it seems like one of those positions where it's OK for Black because some random forced lines that just so happen to work after every White move. But that's not really helping me understand why this is good or how I would ever attempt to create such a position.
Black to move