What is 2% of 90? 1.8 2% of 90 Copy 2% of 90 = 1.8. Formula UsedResult = (2 ÷ 100) × 90 = 1.8 Frequently Asked Questions What is 2% of 90?1.8. (2 ÷ 100) × 90 = 1.8.How to calculate 2%?Multiply by 0.02 (or multiply by 2 then divide by 100).