1. Such regulations, restrictions and boundaries may from time to time be amended. Such amendment shall be effected by a simple majority vote of the town board, except that any such amendment shall require the approval of at least three-fourths of the members of the town board in the event such amendment is the subject of a written protest, presented to the town board and signed by:
- (a) the owners of twenty percent or more of the area of land included in such proposed change; or
- (b) the owners of twenty percent or more of the area of land immediately adjacent to that land included in such proposed change, extending one hundred feet therefrom; or
- (c) the owners of twenty percent or more of the area of land directly opposite thereto, extending one hundred feet from the street frontage of such opposite land. The provisions of the previous section relative to public hearings and official notice shall apply equally to all proposed amendments.