To convert a percentage into a decimal, you simply divide the percentage by 100. This is because percentages are based on a fraction of 100. Therefore, to convert 3 percent into a decimal, you perform the following calculation:
3 percent ÷ 100 = 0.03
As a result, 3 percent expressed as a decimal is 0.03. This method can be used for any percentage. Just remember to divide by 100, and you will have the decimal equivalent of any percentage you start with!