XLSX Password Breaker will be good helper for you.Compared with the earlier version, the protection in MS Office Excel 2007-2010 is much stronger; hence, it is harder to break XLSX passwords in the latest versions than to break XLS passwords in earlier versions.

Some features of XLSX Password Breaker:
1.Help users to reopen the password protected XLSX files.
2.Have the capacity to break XLSX passwords, XLS password and passwords for other types of Excel files.
3.Support files created by MS Office Excel 1997-2010.
4.Display the current password and current speed in the interface. Users can view the status in the interface.
5.Support all Windows operating systems.