Answer :

To convert a decimal number to a percentage, you follow these steps:

1. Multiply the decimal number by 100. This moves the decimal point two places to the right, converting it into a whole number.
2. Append the percent sign (%) to the result, to indicate that the number is a percentage now.

For the decimal 2.47, we carry out the multiplication:

2.47 * 100 = 247

Once we have this result, we add the percent sign to get:

247%

Therefore, 2.47 as a percentage is 247%.