How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 8/23100.0*Chance in playoffs100.0*Average seed
Wilmington 3 Orlando 1 -2.9
-0.2
Rochester 2 Harrisburg 2 +2.4
+0.1
Charlotte 0 Pittsburgh 1 +1.8
+0.1
Orange County 1 Wilmington 2 -0.9
-0.1
Seattle 5 Arizona 1 +0.8
+0.0
OKC 0 Charleston 2 +0.7
-0.1
Pittsburgh 3 Dallas 1 -0.4
Los Angeles 3 Wilmington 3 -0.1
Sacramento 3 Charleston 1 +0.1
Week of 8/30100.0*Chance in playoffs100.0*Average seed
Charleston 2 Harrisburg 1 -22.2
-0.7
Harrisburg 1 Rochester 4 -19.5
-1.1
Montréal 1 Charlotte 1 -4.1
-0.1
Charleston 4 Pittsburgh 0 +2.1
-0.0
Sacramento 1 OKC 0 +0.3
+0.0
Wilmington 0 Sacramento 0 +0.1
+0.0
Wilmington 0 Orlando 0 -0.0
Dayton 0 Wilmington 4 -0.2
Week of 9/6100.0*Chance in playoffs100.0*Average seed
Charlotte 2 Harrisburg 4 In
+1.1
Pittsburgh 1 Arizona 2 +3.4
+0.3
Rochester 2 Wilmington 0 -0.5
Points
Chance Will Make Playoffs