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 196 and 64 is 132 (196 - 64 = 132).

Next, we need to find the average of the two numbers. The average of 196 and 64 is (196 + 64) / 2 = 130.

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 64 is (132 / 130) x 100 = 101.54%.

This means that the second number (64) is 101.54% less than the first number (196). Alternatively, we can say that the first number is 101.54% more than the second number.