To convert this puppy, we move the decimal point that's hiding to the right of the number 2 over to the left by two places. Because there's only one number for the decimal to hop over, we add a couple zeros.
Example 2
Convert 160% to a decimal.
The (invisible) decimal point in 160% is to the right of the 0. Moving it two places to the left leaves it between the 1 and the 6.
Example 3
Convert 0.5% to a decimal.
0.5% is a teensy little percent, so it'll convert into a very small decimal. Hopping to the left two places, the decimal point parks itself in front of two zeros and the 5.