A store surveyed their customers to find out their ages. The bar graph below shows the number of customers in each age group.

[Graphs generated by this script: setBorder(28,45,0,10); initPicture(0,12,0,40);axes(1000,5,1,1000,5); fill="blue"; stroke="black";textabs([315,0],"Age","above");rect([1,0],[3,30]);text([2,0],"under 17","below");rect([3,0],[5,35]);text([4,0],"18-24","below");rect([5,0],[7,40]);text([6,0],"25-34","below");rect([7,0],[9,30]);text([8,0],"35-50","below");rect([9,0],[11,20]);text([10,0],"over 50","below");]

What percent of customers surveyed were 18-24? Round your answer to 1 decimal place.

%