Formula switch

K

Hi all. I just switched my baby 2 days ago from similac sensitive to enfamil neuropro gentle ease. He seems about 75% better, less crying, fussiness and discomfort. I also added a culturale baby probiotic. I’m noticing that baby’s poop is army green now as compared to yellow/brown seedy as it was prior on similac sensitive. Is this normal? Both formulas have the same amount of iron. Do we think it’s a result of formula switch or the probiotic?