Complex sentence: Following the Revolution and Algerian independence, all but 6,500 of the country's 140,000 Jews left the country, of whom about 90% moved to France with the pied-noirs and 10% moved to Israel.
Split into simpler sentences: Following the Revolution and Algerian independence, all but 6,500 of the country's Jews left the country. Of the immigrants, about 90% moved to France and 10% moved to Israel.