What is 8% of 20? 1.6 8% of 20 Copy 8% of 20 = 1.6. Formula UsedResult = (8 ÷ 100) × 20 = 1.6 Frequently Asked Questions What is 8% of 20?1.6. (8 ÷ 100) × 20 = 1.6.How to calculate 8%?Multiply by 0.08 (or multiply by 8 then divide by 100).