I have my USB up and running, with persistence, and persistence is confirmed to work when I save files in that location. It does not, however, save changes made to the rest of the OS. For instance, if I install tor and reboot with persistence, tor is no longer installed. Does anyone know what the cause of this could be?

My partition for persistence is /dev/sdc2 at the moment and the mount point is /media/persistence
Under Devices in the file viewer the only files are lost+found and persistence.conf