A vendor on Peachtree sells bratwurst hot dogs for $4.70. His cart is open from 9 - 5, Monday through Friday. His variable costs average $0.75 per hot dog (depending mostly on toppings). He is considering a price decrease to $4.35. Calculate the percent profit breakeven metric for this price change. Report your answer as a percentage (whole number) and round to the nearest percentage point.

The correct answer is 10

How is this the correct answer? Thank you

When I first tried to solve this problem I got the answer 9 but that was incorrect. Can you please explain to me how 10 is the correct answer? Thank you.