The sacrament of Extreme Unction no longer exists in the Catholic Church, except among some traditionalist groups like the SSPX.
The the rite surrounding this Sacrament in the Novus Ordo has been radically changed and mostly amounts now to a simple blessing (blessings for the sick are always OK, of course, but the Sacrament is reserved traditionally for those who are gravely ill, especially those in danger of death from bodily illness or injury). Some of the changes:
The primary purpose of the Sacrament is the remission of sins and the preparedness of the soul.
In the new rite, the priest asks no pardon of God for sins and the focus is on the body.
The matter of the Sacrament is olive oil blessed by a Bishop using these words, “Emitte, quaesumus Domine, Spiritum sanctum tuum Paraclitum de coelis in hanc pinguedinem olivae, quam de viridi ligno producere dignatus es and refectionem mentis et corporis...” (”Send forth we pray, Your Holy Spirit, the Paraclete, from heaven into this rich substance of oil”).
In the new rite, any oil of plant origin may be used, blessed by a priest using these words: “May your blessing come upon all who are anointed with this oil, that they may be freed from pain and illness and made well again in body and mind and soul.” The Holy Ghost is no longer invoked.
The form of the Sacrament is: “Through this Holy Unction or oil, and through the great goodness of His mercy, may God pardon thee whatever sins thou hast committed by evil use of sight (sight, hearing, smell, taste and speech, touch, ability to walk).”
In the new rite, it is given as “Through this holy anointing may the Lord in His love and mercy help you with the grace of the Holy Spirit. May the Lord who frees you from sin save you and raise you up.” There is no request of God to remit sins.