Complex sentence: There is a huge population of expatriate Indians in Saudi Arabia, numbering over 1,500,000 as of the year 2000 and constituting at least 7% of the country's total population.
Split into simpler sentences: There is a huge population of expatriate Indians in Saudi Arabia, numbering over 1,500,000 as of the year 2000. Indians constitute at least 7% of the country's total population.