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How to calculate %increase

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03-28-2011, 08:36 PM	#1 (permalink)
Creeper EcoModding Lurker Join Date: Aug 2010 Location: Mississauga Posts: 80 Thanks: 0 Thanked 2 Times in 2 Posts	How to calculate %increase Ok I know this is a stupid question but I just have been doing some cals and I'm averaging 9.789274L/100km in the city in a Chevey Optra (Suzuki Reno) that is rated at 12.4L/100km in the city so any help figuring out my % increase would be appreciated. __________________ 2 cars one never gets driven the other is an MPG project already at 5% increase in standard driving economy CAI and Pulstar plus. Thinking weight reduction next year.

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03-28-2011, 10:16 PM	#2 (permalink)
Kodak Master EcoModder Join Date: Feb 2011 Location: USA Posts: 346 Canyon - '07 GMC Canyon 2wd regular cab 90 day: 24.95 mpg (US) Thanks: 41 Thanked 39 Times in 24 Posts	You want the percent difference formula: ((new - old) / old) x 100 = Percent difference. Example: A driver improved from 15 to 18mpg ((18-15)/15) = .2 .2 x 100 = 20 20% improvement Not a stupid question at all.

03-29-2011, 10:17 AM	#3 (permalink)
BHarvey Master EcoModder Join Date: Nov 2010 Location: Atlanta Posts: 403 Sweetie - '11 Hyundai Sonata GLS 90 day: 39.35 mpg (US) My Miles - '03 Combo GLS/KLX/Ninja 90 day: 40.49 mpg (US) Sipper' - '04 Kawasaki Ninja 250 90 day: 74.98 mpg (US) Thanks: 1 Thanked 37 Times in 28 Posts	Take your 12.4 and divide that by 9.789 to arrive at 1.2667, or 26.67% better.

03-29-2011, 01:43 PM	#4 (permalink)
Creeper EcoModding Lurker Join Date: Aug 2010 Location: Mississauga Posts: 80 Thanks: 0 Thanked 2 Times in 2 Posts	Thanks for the calculation this should help out greatly __________________ 2 cars one never gets driven the other is an MPG project already at 5% increase in standard driving economy CAI and Pulstar plus. Thinking weight reduction next year.

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