To find the percentage difference between two numbers, we first need to find the absolute difference between them. In this case, the absolute difference between 190 and 165 is 25.

Next, we need to find what percentage of the original number the absolute difference represents. To do this, we divide the absolute difference by the original number (165) and then multiply by 100 to get the percentage.

So, the percentage difference between 190 and 165 is:

(25/165) x 100 = 15.15%

This means that the difference between 190 and 165 is 15.15% of the original number (165).