If 3 is increased to 9 , the increase is what percent of the original number? The answer is 96.

Step 1 ：\(\text{Increase} = 9 - 3 = 6\)

Step 2 ：\(\text{Percentage Increase} = \frac{\text{Increase}}{\text{Original Number}} \times 100\)

Step 3 ：\(\text{Percentage Increase} = \frac{6}{3} \times 100 = 200\%\)