Whenever the public necessity, convenience, general welfare or good zoning practice requires, the Town Board may adopt any ordinance or changes in the district boundaries and may amend, change or supplement the regulations established by this chapter or amendments thereto. All such changes or amendments shall be adopted according to the procedures established under §§ 60.62 and 62.23(7), Wis. Stats., upon review and recommendation by the Town Plan Commission.

In case of a protest against any such change or amendment, duly signed and acknowledged by the owners of 20% or more either of the areas of land included in such proposed change or amendment or by the owners of 20% or more of the area of land immediately adjacent extending 100 feet therefrom or by the owners of 20% or more of the land 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 3/4 of the members of the Town Board voting on the proposed change or amendment.

In accordance with § 91.77(1) and (3), Wis. Stats., decisions on petitions for rezoning areas zoned A-1 Farmland Preservation District shall be based on findings which consider the following: