The Clerk of the Council shall, at its next meeting, present the petition to the Council, which shall proceed to reconsider the ordinance or resolution. If, within thirty days after the filing of such petition, the ordinance or resolution be not repealed or amended as requested by said petition, the Council shall provide for submitting same to a vote of the electors, provided a majority of the Committee named in the petition to represent the petitioners shall by writing filed with the Clerk of the Council within twenty days after the expiration of the said thirty days, so required. In so doing the Council shall be governed by the provisions of Section 41 hereof respecting the time of submission and the manner of voting on ordinances proposed to the Council by petition; excepting that the question of calling a special election for such purpose shall be determined by the demand and number of signers of the petition requesting the repeal or amendment of such ordinance or resolution, which number shall be twenty-five (25) percent of the total number of voters voting at the last regular election of municipal officers; and, excepting further, that the Council may call, and fix the time for a special election for such purpose, if in its judgment the public interest will be prejudiced by delay. If when submitted to vote at such election any such ordinance or resolution be not approved by a majority of those voting thereon, it shall be deemed repealed. Such ordinance or resolution shall not be considered as repealed unless the total number of votes cast upon the ordinance or resolution shall be equal to twenty-five (25) percent of the total number of voters voting at the last regular election of municipal officers. Nothing in this section shall prevent the Council, after the passage of any ordinance or resolution, from proceeding at once to give notice or make any publication required by such ordinance or resolution.