Off the top of my head here are some of the larger changes;

new crawl (leaving destination of map to unfold during the film).
Finn is just his name, Poe doesn’t name him.
Redubbed and subtitled Unkar.
Moved and recoloured TIE Apocalypse Now shot.
No Phasma (glimpsed once during the big Hux speech I believe, otherwise she’s gone).
Heavily reworked rathtar sequence (no Scot or Kanjiklub, or rathtars!) with new subtitles.
Moved and rejoined sequences.
New music in Maz’s castle.
Shouting “Traitor” is left for Kylo at end, trooper here majorly edited.
Moved some Snoke scenes around.
Starkiller firing moved to end (as others have done here also).
Composited in some captured Battlefront footage of a Star Destroyer with TIES over Takadona.
Kylo searches Falcon reinserted.
Muted/re-cut a lot of 3PO.
Un-mirrored some shots.
Restructured shield down sequence by moving some scenes and incorporating some TFA ad footage.
R2 unveiled near close.
Dialogue and pacing cuts (lots and lots of these actually - some tiny).
Rescored end with trailer music (epicness).
More I am probably forgetting…