Use the percent formula $A=P B$ to answer the question below. What percent of 2.5 is 0.3 ? 0.3 is $\square \%$ of 2.5 . (Round to two decimal places as needed.)

Step 1 ：Given that A = 0.3 and B = 2.5, we need to find P in the formula A = P * B.

Step 2 ：Rearrange the formula to solve for P: P = A / B.

Step 3 ：Substitute the given values into the formula: P = 0.3 / 2.5.

Step 4 ：Calculate the result: P = 0.12.

Step 5 ：Convert the decimal to a percentage by multiplying by 100: P = 0.12 * 100.

Step 6 ：Round the result to two decimal places as needed: P = 12.0.

Step 7 ：Final Answer: \(\boxed{12.0 \%}\)