30 - (30 / 100 * 50) =
30 - 15 = 15
Question: What is 50% off 30?
Step 1: Get the result of Number (30) / 100 * Percent (50).
30 / 100 * 50 = 15
Step 2: Subtract step one's result (15) from the number (30).
30 - 15 = 15
Result: 50% off 30 = 15.