Original sentence: Most Punjabi people are from Vedic Indo-Aryan tribes while a few clans claim descent from foreign peoples from central Asia,Persia and Arabia.They make up 78.7 million (45%) of Pakistan's total population
Edited sentence: Karachi which is the largest and the most advanced city in the muslim world now loosing its importance because of the huge migration of educated Muhajirs from pakistan in western world.Most Punjabi people are from Sikhs( Sharif, Jaat etc), Vedic Indo-Aryan tribes while a few clans claim descent from foreign peoples from central Asia,Persia and Arabia.There were several political moves occured in the past to free the victimization of Muhajoirs in pakistan but Punjabi and Sindhi landloards destroyed it.They make up 78.7 million (45%) of Pakistan's total population( controversial numbers).This migration demolishing the educational and cultural significance of pakistan because they belong to the founders of pakistan