Which Line Made the Defect?

A factory shipped 20,000 units last month from two production lines:

• Line A produced 13,000 units, and 3% of Line A's units were defective.
• Line B produced 7,000 units, and 7% of Line B's units were defective.

Every defective unit from the month is collected into one bin, and a single unit is drawn from that bin at random.

What is the probability that the drawn unit came from Line B?

Give your answer as a percentage rounded to 2 decimal places (for example, 12.34). Type the number only — do not include the % sign.