If A's salary is 50% more than B's, then by what percent B's salary is less than A's salary?
Let person B earn 100, then
Person A would earn 50% of 100 or 50 more than him.
Hence A earns 150.
Now B earns 50 less than person A.
Which is 50150×100 less than 150 which is 3313%.
Hence, this is the answer.