85/100 as a Decimal 0.85 85/100 = 0.85 = 85% Copy 85/100 = 0.85 = 85%. Simplified: 17/20. Formula Used85 ÷ 100 = 0.85 Frequently Asked Questions What is 85/100 as a decimal?0.85.What is 85/100 as a percentage?85%.