It was the third consecutive loss Enzo Maresca’s males have suffered.
The hosts started the match in good vogue, scoring twice inside the opening 20 minutes.
Jair Cunha pounced on a defensive error to make it 1-0, earlier than Liam Delap raced by way of to complete excessive into the online.
At the beginning of the second half, City threatened to stage a comeback, after Rayan Cherki produced a surprising end.
But Delap added a 3rd for Forest from a swift counter-attack.
