Whenever the owners of 50% or more of the (1) property owners within any district or (2) of the property owners of property fronting on the same street or streets or abutting on the property sought to be changed, and situate within 1,000 feet of the property sought to be changed, shall present to the Township Council a petition duly signed and acknowledged, requesting an amendment, supplement, change, modification or repeal of the regulations prescribed, or of the Zoning Map, including such district, it shall be the duty of the Township Council to hold a public hearing thereon and cause notice thereof to be given in the manner prescribed in § 230-250 herein.