When the Grave Retrieval Units searched for bodies post-war, they were given total numbers of bodies definitely known to be buried in each quarter square (a-d). As you can see from this extract showing the relevant area, they had been notified of 100 in grid square 4b. These were just known graves, each square would also have its unknowns as well. I can't tell you how many were actually recovered from that square, or how many of those were identified, but a trawl through the CWWG records for nearby Polygon Wood Cemetery may be of help. When individuals were moved from another grave, they were given what is known as a 'concentration' document. These can be uploaded and checked, but you need to go through every casualty to find them all. (Having already gone through all 133 pages of these from that cemetery, looking for 12 men of the King's Own buried at Polygon Wood in 1915 and never recovered, it's no quick task!)
