Any city operating pursuant to a statutory form of city government may change to any one of the other statutory forms of city government. The mayor shall issue an order calling for an election on the question of whether or not the city shall change its form of government if:

The initiative petition or resolution of the governing body shall be filed at least one hundred twenty (120) days before the filing date for the next municipal general election and shall include the form of government which is proposed for adoption. The order calling for the election shall be issued by the governing body of the municipality within ten (10) days after a decision has been made on the ballot title, or within ten (10) days after the effective date of the resolution of the governing body.