The regulations imposed and districts created by this Title may be amended from time to time by the City Council after a public hearing before the Council. The Council may, at its discretion, request a report from the Planning and Zoning Commission on proposed regulation amendments or district changes. At least fifteen (15) days' notice of the said Council hearing shall be published in a newspaper having general circulation in the City. In case there is an adverse planning report or when a protest is filed with the Council signed by the owners of twenty percent (20%) or more either of the area of the lots included in such proposed change, or of those immediately adjacent thereto and within two hundred feet (200') of the boundaries thereof, such amendments shall not be passed except by the favorable vote of three-fourths (3/4) of all the members of the Council. (Ord. 5-93, 4-20-1993)