Whenever the public necessity, convenience, general welfare or good zoning practice requires, the assembly may, by ordinance and after report thereon by the commission and public hearing as required by law, amend, supplement, modify, repeal or otherwise change these regulations and the boundaries of the districts. [Ord. FY2019-15 §2, 2019; Ord. FY2018-14 §2, 2018; Ord. 83-58-O §1, 1983. Formerly §17.72.010].