Junhong sold some curry puffs for $360. He had 60 curry puffs left. What percentage of his curry puffs did he sell if each curry puff was sold for $2?

Junhong sold 360/2 = <<360/2=180>>180 curry puffs.

He had 60 + 180 = <<60+180=240>>240 curry puffs.
Therefore, Junhong sold (180/240) x 100% = <<(180/240)*100=75>>75%. Answer: \boxed{75}.