Pope Francis and the documents of Vatican II (Sacrosanctum Concilium 47) most certainly do not say that the Mass is a mere memorial. That is what the Protestants said at the Reformation and it was roundly condemned at the Council of Trent:-
"CANON III.--If any one saith, that the sacrifice of the mass is only a sacrifice of praise and of thanksgiving; or, that it is a bare commemoration of the sacrifice consummated on the cross, but not a propitiatory sacrifice; or, that it profits him only who receives; and that it ought not to be offered for the living and the dead for sins, pains, satisfactions, and other necessities; let him be anathema."