Such regulations, restrictions and boundaries may from time to time be amended, supplemented, changed, modified or repealed. In case, however, of a protest against such change signed by the owners of 20% or more, either of the area of the land included in such proposed change, or of that immediately adjacent extending 100 feet therefrom or of that directly opposite thereto, extending 100 feet from the street frontage of such opposite land, such amendment shall not become effective except by the favorable vote of at least four members of the Town Board. The provisions of the following subsection relative to public hearings and official notice shall apply equally to all changes or amendments.

The Town Board by resolution adopted at a regular or special meeting shall fix the time and place of a public hearing on the proposed amendments and cause at least 10 days' notice of the time and place of such hearing to be given by publishing a notice in at least one newspaper of general circulation in the Town of Westfield and by written notice sent to the prescribed parties of any proposed change or amendment.