Let's first add up all of the spectators that attended the 2010 world cup matches.
618431 + 712023 + 816917 + 1023485 = 3170856
Next, we'll subtract the total number of spectators that attended the 2010 world cup matches from the total number of spectators that attended the 2006 world sub matches.
3359438 - 3170856 = 188582
188,582 fewer spectators attended the soccer matches at the 2010 world cup than the 2006 world cup.
Hope this helps!! :)