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 -1.7
-0.2
Seattle 5 Arizona 1 +1.4
+0.0
Charlotte 0 Pittsburgh 1 +1.3
+0.0
Orange County 1 Wilmington 2 -0.8
-0.1
OKC 0 Charleston 2 +0.7
-0.1
Pittsburgh 3 Dallas 1 -0.7
Rochester 2 Harrisburg 2 +0.4
-0.0
Los Angeles 3 Wilmington 3 +0.3
+0.1
Sacramento 3 Charleston 1 +0.1
+0.1
Week of 8/30100.0*Chance in playoffs100.0*Average seed
Charleston 2 Harrisburg 1 -24.4
-1.0
Harrisburg 1 Rochester 4 -12.9
-0.8
Charleston 4 Pittsburgh 0 +2.7
-0.1
Sacramento 1 OKC 0 +1.4
+0.0
Montréal 1 Charlotte 1 -0.9
-0.0
Wilmington 0 Sacramento 0 +0.2
+0.0
Dayton 0 Wilmington 4 -0.3
Week of 9/6100.0*Chance in playoffs100.0*Average seed
Charlotte 2 Harrisburg 4 In
+0.9
Pittsburgh 1 Arizona 2 +3.5
+0.2
Rochester 2 Wilmington 0 -0.6
Points
Chance Will Make Playoffs