Max barbetshop is considering raising prices by $5 per haircut. Their current price for a cut is $16 and barbers receive 50% of the reverties for agch haircut. Since Max is concemed about demand dropping due to the price increase, he is also planning to start advertising the shop on TV for $1,008/month. If current foxed costs are $12,218/month, and the current profit is $2000/month, by what percent can demand decrease at the new grice level and maintain current leveis of profit on the business