What is 30% of 80? 24 30% of 80 Copy 30% of 80 = 24. Formula UsedResult = (30 ÷ 100) × 80 = 24 Frequently Asked Questions What is 30% of 80?24. (30 ÷ 100) × 80 = 24.How to calculate 30%?Multiply by 0.3 (or multiply by 30 then divide by 100).