Not every kite flyer during this festival engages in this sport. Just small number of people. General injury and death toll is very high considering the number of participants and the fact that this sport is mostly performed only few days per year.
Kite surfing toll is very high too considering the number of people practicing it all over the world, all year round.

You are right about the percentages. The number of fyers engaging in this sport would need to be re-examined, and statistics made.