If the modified excel file was saved in place of the original excel file, it's possible that the original file [though in deleted condition] still exists on the hard-drive somewhere. The less that Windows is used, the much better are the recovery chances, assuming the original excel file's byte-space was not actually over-written. If the original excel file's byte-space was really overwritten, in part or in whole, recovery at best will in part or not at all respectively. Years ago, I was able to bring back a 400-name Lotus 123/DOS file, losing only the last 50 names -- because said file was a "flat file," no formulas, no scripts, just rank and file filled with text.
JohnC and I posted at the same time; try his idea first! If that quick-N-easy does not yield the original file, then onto the hard way.
Edited by RolandJS, 14 July 2016 - 11:19 AM.