What is 9% of 100? 9 9% of 100 Copy 9% of 100 = 9. Formula UsedResult = (9 ÷ 100) × 100 = 9 Frequently Asked Questions What is 9% of 100?9. (9 ÷ 100) × 100 = 9.How to calculate 9%?Multiply by 0.09 (or multiply by 9 then divide by 100).