Possession #1: net change is +5
Possession #2: net change is -13
Possession #3: net change is + 24
Possession #4: net change is + 36
Possession #1: net change is -2
Possession #2: net change is +68
Possession #3: net change is + 9
Possession #4: net change is +35
hope this helps
just subtract the numbers of Lost to gained and you get the net change