i have no clue how to do these

3. (8 points) In May 2016, the Dow Jones Industrial Average closed at 17492.93 and the S\&P 500 closed at 2048.04. Home Depot closed at 131.42 (about .9% of S\&P index) and Pfizer closed at 33.67 (about 1.065% of S\&P index). The DJIA divisor at that time was .146021280775. i.) Suppose the next day only Home Depot closed down 2% and the others remained unchanged. Show what would be the new DJIA value and S\&P 500 level