my trusty friend excel failed

Good day to You.
I would like to apologize in advance if suddenly wrote wrong or not issued. All the defects after the warning will immediately correct. All that is required to write.
Of course you want to write: "URGENT help!!!", but I'll just describe the situation in which you want to find a solution. I will not describe the details of how it happened that, just write the point.(to be unable to describe )
Was: the Excel document, changed, saved and closed the document. Now-need to restore the data that was before the change. How could anyone do that?
I forgot - Excel 2007

 

Hello ) you can try to use recovery using backup, or if this method does not help, try xlsx file repair, this program works online !!! you can find here
I wish you good luck !