Write 0.027 as a percentage.

Step 1 ：Write 0.027 as a percentage.

Step 2 ：To convert a decimal to a percentage, we need to multiply the decimal by 100.

Step 3 ：decimal = 0.027

Step 4 ：percentage = 2.7

Step 5 ：Final Answer: \(\boxed{2.7\%}\)