Any person or persons, jointly or severally, aggrieved by any decision of the Planning and Zoning Commission, may present to the City Commission a petition, duly verified, setting forth that such decision is unjust, in whole or in part, specifying the grounds of injustice. Such petition shall be presented to the City Commission within ten (10) days after the final decision of the Planning and Zoning Commission, and not thereafter, for notification and calling of a public hearing to hear and act on the appeal.