Name changes play an important role throughout the Tanakh narrative. A person's name is the essence of his or her identity - it is what defines them within society, and is at the foundation of their character. Therefore, a change of a person's name signifies a major change in his or her identity. Changing a person's name (either by a parent, a conqueror or other ruler, or God) can be seen as an act of subordination, essentially claiming ownership over that individual by making a distinct identity change within them.
There are a number of instances in Tanakh where we can notice this phenomenon. God changes Avram's name to Avraham and Sarai's name to Sarah during the covenant of Brit Mila (Gen. 17: 1-20) Yaakov's name was changed to Yisrael after he wrestles with the angel -- a true identity change as the young nation suddenly needs to learn how to fight and contend with enemies. (Gen. 32: 29).
Pharaoh changes Yosef's name to Zaphenath-paneah when he became deputy to the king in Egypt -- a sign of both Yosef's identity change and immense power but yet his subordination to Pharaoh. (Gen. 41:45)
Prior to the Sin of the Spies, Moshe changes Hoshea Bin Nun's name to Yehoshua (Num. 13:16), adding God's name onto the name Hoshea paved the way for him to courageously stand up to the rest of the spies, eventually becoming the future leader of the nation and being referred to as "eved Hashem" - the servant of God (Joshua 24:29).
Yehoyakim was the king of Yehuda shortly before the destruction of the Temple. Pharaoh Necho of Egypt appointed him as king instead of his brother, Yehoahaz, and changed his name from Elyakim to Yehoyakim, and took Yehoahaz prisoner to Egypt (II Kings 23:34). This name change was clearly to portray Egypt's control over the Kingdom of Yehuda.
Tzidkiyahu was the last king of Yehuda before the destruction of the Temple. Originally named Matanya, he was appointed king of the Kingdom of Yehuda by Nebuchadnezzar, king of Babylonia to replace his nephew, Yehoyachin. Nebuchadnezzar changed Matanya's name to Tzidkiyahu (II Kings 24:17) in order to signify his control over the Yehuda, and was ultimately the destroyer of the Temple.