31 - (31 / 100 * 66) =
31 - 20.46 = 10.54
Question: What is 66% off 31?
Step 1: Get the result of Number (31) / 100 * Percent (66).
31 / 100 * 66 = 20.46
Step 2: Subtract step one's result (20.46) from the number (31).
31 - 20.46 = 10.54
Result: 66% off 31 = 10.54.