Complex sentence: The population of the city is multi-ethnic, with approximately 60% Pashtuns, 20% Tajiks, 15% Hazaras, and 5% Hindus, while in Ghazni province overall, Pashto speakers make up 51% of the population.
Split into simpler sentences: The population of the city is multi-ethnic, with approximately 60% Pashtuns, 20% Tajiks, 15% Hazaras, and 5% Hindus. But in the much larger Ghazni province overall, Pashto speakers make up 51% of the population.