A nonconforming use may be changed to another nonconforming use of the same or greater restrictions, provided no structural changes are made in the building. Whenever a nonconforming use has been changed to a conforming use or to a use permitted in a district of greater reconstructions, it shall not thereafter be changed to a nonconforming use or a less restricted one.
(Ord. passed - -) Penalty, see § 152.999