What is 1% of 80? 0.8 1% of 80 Copy 1% of 80 = 0.8. Formula UsedResult = (1 ÷ 100) × 80 = 0.8 Frequently Asked Questions What is 1% of 80?0.8. (1 ÷ 100) × 80 = 0.8.How to calculate 1%?Multiply by 0.01 (or multiply by 1 then divide by 100).