Complex sentence: Muslims of Kerala, of which Mappilas constitute a majority, constitute 26.56% of the population of the state (2001), and as a religious group they are the second largest after the Hindus (54.75%).
Split into simpler sentences: Muslims of Kerala, of which Mappilas constitute a majority, make up a large community in Kerala state: 26.56% of the population. As a religious group they are the second largest after Hindus (54.75%).