October 19, 2012 4:15 PM Subscribe
I know the price of something now and what the price was 2 years ago - how do I calculate that as an annual percentage increase?
posted by jontyjago to Science & Nature (12 answers total) 3 users marked this as a favorite
I live in Argentina where inflation is (unofficially) estimated at 25% annually. I remember that 2 years ago a kilo of ice cream at my local shop was 29 kilos. It's now 48 pesos. That's a 71% increase over 2 years - how do I calculate that on an annual basis (assuming the same increase each year)?
I've worked it out using trial and error, but I'm looking for a formula I can use and apply to other figures.