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 196 and 49 is 147.

Next, we need to find the average of the two numbers. The average of 196 and 49 is (196+49)/2 = 122.5.

Now, we can calculate the percentage difference by dividing the absolute difference by the average and multiplying by 100. So, the percentage difference between 196 and 49 is (147/122.5) x 100 = 120%.

This means that the second number (49) is 120% less than the first number (196). Alternatively, we can say that the first number is 220% greater than the second number.