Verified:

DerrickICN Game profile

Member
EE Patron
6353

Jul 29th 2019, 19:54:00

(Fg (.85 ha/p) + Ff (2.53 ha/p)) / Ftot (6.21) × 100% = gf

(.85+2.53) / 6.21 × 100 = 54.43%

The reason you get variable answers is likely because the order of operations. Because of the wording of the statement you need the first parenthesis to get an accurate answer. Your equation is missing those.