How are these numbers calculated?

Big Games

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

Week of 4/19100.0*Chance in playoffs100.0*Average seed
Shock 4 Spark 0 -17.1
-1.7
Charge 3 Reign 1 +1.4
+0.1
Fusion 1 Excelsior 3 +1.4
+0.1
Hunters 1 Gladiators 3 +1.3
+0.1
Uprising 0 Titans 4 +1.2
+0.1
Mayhem 1 Dragons 3 -0.9
-0.1
Dragons 3 Outlaws 0 -0.9
Dynasty 4 Fuel 0 +0.7
Uprising 0 Spitfire 4 +0.6
Gladiators 3 Mayhem 1 -0.6
Fuel 0 Titans 4 +0.4
Defiant 0 Shock 4 +0.1
Week of 4/28100.0*Chance in playoffs100.0*Average seed
Eternal 2 Spark 3 +24.3
+1.9
Hunters 1 Spark 3 +16.1
+1.9
Fuel 3 Outlaws 1 -4.0
-0.2
Spitfire 1 Hunters 3 -3.2
-0.2
Spitfire 4 Eternal 0 +1.9
+0.1
Dynasty 4 Outlaws 0 -1.1
Valiant 2 Dynasty 3 -0.6
Fuel 4 Valiant 0 +0.1
If winner is:HomeAway
Week of 5/3100.0*Chance in playoffs100.0*Average seed
Spark vs DynastyIn-47.6
+1.6-1.6
Valiant vs Hunters+2.4-2.4
+0.3-0.3
Shock vs Fusion+2.4-2.4
+0.2-0.2
Justice vs Dragons+2.4-2.4
+0.2-0.2
Shock vs Dragons+2.4-2.4
+0.2-0.2
Uprising vs Justice-0.7+0.7
-0.1+0.1
Gladiators vs Uprising+0.7-0.7
+0.1-0.1
Mayhem vs Fuel+0.3-0.3

What If

Chances based on how well the Spark finish out the regular season.   Explain

100100100100100100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs1234567891011121314151617181920Count
51-0In0003850124,556,406,645
40-14.9%00525412544,556,699,115
Total:52.4%0001925913201229,113,105,760
Games Above .500
Chance Will Make Playoffs