Ilum Exploration

I just got this! There is one point in the crystal caves where you have to climb up on a wall. Go down and left! That's the 4% I was missing

as far as the jedi temple part goes there is an underwater cave that gave me some that i was missing be sure to check!

anyone having any luck figuring out any locations that can be related to finding that 4% on Ilum? I’m at 96% I’ve found all chests and secrets, I’ve scanned everything I think. I’ve searched for hours and can’t find a single thing 

As Togabito said above, there is a fairly tall climbing wall available after you force push a stone off a ledge to create a stepping stone at the large Jedi statue. Instead of climbing the cliff up, climb down and to the left to find an echo and the last 4%.

There is an underwater cave on the left side(if you are facing the ice caves) as you are leaving the jedi temple that gave me my last 20%.

Not sure if this happened to anybody else, but I glitched on Ilum and on Zeffo. After restarting game, I still had the discovered secrets, but it was not showing that in the legend. same thing happened regarding map space explored; once I returned to those areas, my % did not go up.

When re-entering into the Jedi Temple from the Crystal Caves swim to the right, climb up the wall and the last echo will be there. 

if you are at 80%, there is a hole on the left when entering the water for the first time on the way through here. 

If you are at 90%, it will give the last 10% when the story progresses. That 10% cant be missed.