how to calculate nominal percentage increase?
['= [(164 – 100) / 100]', '= 64 / 100.', '= 0.64 or 64.0%', 'This is the standard method of calculating percentage change.', 'We want to compare the prices so to net out general inflation we can adjust the 1980 and 1990 nominal prices into real prices in year 2000 dollars.']