Either the text or map of this Zoning Code may be amended at any time by an ordinance adopted by the City Council, following notice and hearing as provided under Ohio R.C. 713.12. Amendments that are consistent and coextensive with a recommendation from the Planning Commission may be adopted upon the affirmative vote of four (4) elected members of Council. Amendments materially differing from, or unsupported by a recommendation from the Planning Commission may be adopted only upon the affirmative vote of three-fourths (3/4) of the membership of the Council.