To convert a decimal number into a percentage, you multiply the decimal by 100 and then add the percent sign (%). For example, to convert 0.005 into a percentage, you would perform the following calculation:
0.005 × 100 = 0.5%
So, 0.005 is equal to 0.5%. This means that 0.005 represents half a percent of a whole. This conversion is useful in various contexts, such as finances, statistics, and data analysis, when you need to represent values in a more intuitive way.