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 180 and 104 is 76.

Next, we need to find what percentage of 180 is 76. To do this, we divide 76 by 180 and then multiply by 100. This gives us:

(76/180) x 100 = 42.22%

So the percentage difference between 180 and 104 is 42.22%. This means that 104 is 42.22% less than 180.