30 - (30 / 100 * 10) =
30 - 3 = 27
Question: What is 10% off 30?
Step 1: Get the result of Number (30) / 100 * Percent (10).
30 / 100 * 10 = 3
Step 2: Subtract step one's result (3) from the number (30).
Result: 10% off 30 = 27.