The monthly salaries of Ram and Shyam are in the ratio 5 : 7. From Ram's salary, 25% amount is paid for his child's fee, he given 33.33% of the remaining amount to his wife, donates 1/4^th to a charity and invests 30% in mutual funds. At the end Ram is left with Rs. 8750 as savings. What is the approximate % of difference between Ram and Shyam salary with respect to Shyam's salary?