How many times stronger did Goku get after training with Kor

[withheldforprivacy]

Krillin- 100
Blue- 125
21st TB Goku- 135
Pre Water Goku- 150
Tao- 385
Post Water Goku- 450

 

[p123]

When Jackie Chun moved so fast Krillen couldn't see and one shotted him, how much stronger was he?

Tao states he would show Goku the real him or something of that nature.

Also...

Goku > Tao > Devil Man > Mummy > Jackie Chun


Pretty much dictates that Goku's increase was indeed very significant.