How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Wednesday, 3/14100.0*Chance in playoffs100.0*Average seed
HA 15 SPA 16 -8.4
-1.1
HA 12 LO 14 -3.8
-0.9
SPA 20 LO 19 -0.5
+0.1
MEL 6 OS 9 -0.4
JPP 14 OS 9 +0.2
JPP 17 MEL 9 -0.2
-0.1
BF 29 RS 10 +0.1
-0.1
EG 14 RS 15 -0.1
-0.0
EG 15 BF 24 -0.0
Monday, 3/19100.0*Chance in playoffs100.0*Average seed
SAL 14 HA 13 -27.9
-0.8
OS 10 SPA 18 +5.3
+0.1
MEL 16 HA 17 +3.9
+0.1
RS 12 JPP 19 +1.4
+0.0
MEL 10 SAL 26 -1.3
-0.0
EG 15 OS 19 -1.2
-0.0
RS 18 QE 3 -0.6
-0.0
EC 11 LO 23 -0.2
-0.0
JPP 25 QE 5 -0.2
-0.0
Wednesday, 3/21100.0*Chance in playoffs100.0*Average seed
RS 5 HA 22 In
+1.0
RS 2 LO 27 +0.5
JPP 18 SAL 32 -0.3
-0.2
SPA 21 SAL 17 +0.1
+0.1
Games Above .500
Chance Will Make Playoffs