What is a tool like diff to visually see the differences between projects?

Question

Eclipse

I will describe the situation. There was a project that I rewrote somewhere by 60-70%. At the same time, the structure and file names have completely changed. But part of the code was saved. For myself, I would like to know exactly how many percent of the old code is left. Can this be done somehow?
Android, IDE - Eclipse, VCS - Git

Answer 1

I am using Meld.
Called by the
Upd command. I'm sorry, I didn't read the question itself, but only the title :)
Alternatively, put two projects into one and use pmd.sourceforge.net/pmd-5.1.3/cpd.html