The balance between show and tell is going to come down to your style of telling a story. If showing is so much better, you'll still need to tell portions of your story to showcase the contrast.
Telling is going to be communicating large amounts of information, quickly, and in very few words.
Showing is going to be a lot slower with a closer focal.
Here's one way of looking at a good balance between S-a-T . Imagine a story as a beaded necklace. The actual bead is a scene with character interaction, dialogue, secrets, and killing

this is where you will want to 'Show'.
Now, the space between the beads (the string) is your characters going somewhere else to talk about killing more people. It is less important and therefore you give it to the narrator and he says -'They all took a plane to Ohio'
In seven short words, you got the entire cast to Ohio.
Now its time for another 'Show' bead.

Yes-maybe?