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 48 and 50 is 2.

Next, we need to find the average of the two numbers. The average of 48 and 50 is (48+50)/2 = 49.

Now, we can calculate the percentage difference by dividing the absolute difference by the average and multiplying by 100.

So, the percentage difference between 48 and 50 is (2/49) x 100 = 4.08%.

This means that 48 is 4.08% less than 50, or that 50 is 4.08% more than 48.