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 192 and 180 is 12 (192 - 180 = 12).

Next, we need to find the average of the two numbers. The average of 192 and 180 is (192 + 180) / 2 = 186.

Now, we can calculate the percentage difference by dividing the absolute difference by the average and multiplying by 100. So, the percentage difference between 192 and 180 is (12 / 186) x 100 = 6.45%.

This means that the difference between 192 and 180 is 6.45% of the average of the two numbers.