To find the percentage difference between two numbers, we first need to calculate the absolute difference between them. In this case, the absolute difference between 144 and 180 is 36 (180 - 144 = 36).

Next, we need to find the average of the two numbers. The average of 144 and 180 is (144 + 180) / 2 = 162.

Now, we can calculate the percentage difference by dividing the absolute difference by the average and multiplying by 100. So, the percentage difference between 144 and 180 is (36 / 162) x 100 = 22.22%.

This means that the second number (180) is 22.22% higher than the first number (144).