If x earns 25% more than y. What percent less does y earn than x

If x earns 25% more than y.What percent less does y earn than x
1). 16%
2). 10%
3). 20%
4). 25%

This Question has 2 answers.

20% seems correct.

. Required percentage
= $\frac{25}{100+25}\times100$

= 20%