Well this is the definition of the U in TULIP
"U" in "TULIP" stands for "Unconditional Election" (Predestination).
"God's choice of certain individuals unto salvation before the foundation of the world rested solely in His own sovereign will. His choice of particular sinners was not based on any foreseen response of obedience on their part, such as faith, repentance, etc. On the contrary, God gives faith and repentance to each individual whom He selects. These acts are the result, not the cause of God's choice. Election therefore was not determined by or conditioned upon any virtuous quality or act foreseen in man. Those whom God sovereignly elected He brings through the power of the Spirit to a willing acceptance of Christ. Thus God's choice of the sinner, not the sinner's choice of Christ, is the ultimate cause of salvation."
This definition means that it's 100% Gods doing.. According to calvinism God gives everything.. Faith repentence.. ""These acts are the result , not the cause of Gods Choice""