What is 10% of 80? 8 10% of 80 Copy 10% of 80 = 8. Formula UsedResult = (10 ÷ 100) × 80 = 8 Frequently Asked Questions What is 10% of 80?8. (10 ÷ 100) × 80 = 8.How to calculate 10%?Multiply by 0.1 (or multiply by 10 then divide by 100).