How are these numbers calculated?

Big Games

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

Week of 4/27100.0*Chance in playoffs100.0*Average seed
Wade 7 Lewis 4 +1.2
+0.4
Lewis 0 van Gerwen 7 +0.3
+0.1
Taylor 3 Wright 7 +0.3
Chisnall 6 van Gerwen 6 -0.0
Week of 5/4100.0*Chance in playoffs100.0*Average seed
Wade 3 Anderson 7 Out
-0.6
van Gerwen 3 Taylor 7 -1.9
-0.1
van Barneveld 5 Chisnall 7 +1.5
Wright 7 Lewis 2 +1.2
+0.2
Week of 5/11100.0*Chance in playoffs100.0*Average seed
Taylor 7 Lewis 5 +0.3
Wright 7 van Barneveld 1 +0.1
Chisnall 6 Wade 6 -0.0
Games Above .500
Chance Will Make Playoffs