This Title may be amended by ordinance whenever the public necessity, convenience or general welfare requires. Any proposed amendment which changes property from one (1) zone to another or imposes any zoning regulation not previously imposed or which removes or modifies any such regulation therefor imposed, as set forth in Government Code Section 65850, must be adopted in accordance with the procedure set forth in Government Code Sections 65854 through 65857, as summarized in the following sections. Any other amendment to this Title may be adopted in the same manner as other ordinance amendments.