84/100 as a Decimal 0.84 84/100 = 0.84 = 84% Copy 84/100 = 0.84 = 84%. Simplified: 21/25. Formula Used84 ÷ 100 = 0.84 Frequently Asked Questions What is 84/100 as a decimal?0.84.What is 84/100 as a percentage?84%.