King Henry VIII did not just make changes to the church, he started one of his own. He broke away from the Catholic Church and founded the Church of England, also known as the Anglican Church. In this way, he was the leader of the English Reformation.
Unlike other Protestant reformers, Henry did not have serious disagreements with the Catholics in terms of dogma and teachings; his issues were of of personal and political nature. Simply put, he did not like having to yield his royal authority to the Vatican in matters concerning how he maintained the religious institutions of his own kingdom.
After splitting from the Catholic Church in 1533, King Henry seized the property of Catholic institutions in his realm. He instituted his own church hierarchy with the Archbishop of Canterbury as the top bishop in the kingdom. Henry even placed himself as the head of the Church of England, essentially taking on the role of the Anglican equivalent of a pope.
Even though the Church of England did not differ much in its beliefs from the Catholic Church, Henry VIII did make some changes. This had much to do with the influence of other Protestant reformers in Europe at the time. Henry eliminated five of the seven Catholic sacraments, leaving just the sacraments of baptism and the Eucharist.
Henry also placed more importance on justification by faith for salvation. Like the Lutherans, Anglicans simply had to have faith in God and repent their sins to receive salvation. This was a sharp departure from Catholic teachings, which say that good works are also required.