Suppose that in 1990, a coffee cost $2, and the CPI at the time is 118. Suppose that in 2022, a coffee cost $6, and the CPI at the time is 300.

Compute the percentage change in the real price of a coffee from 1990 to 2022. (Hint: convert the 1990 price of a coffee into 2022 dollars, and then calculate the percentage change in the prices, using the 2022 price as the new value, and 1990 as the previous value.) Round your answer to two places after the decimal point (0.01).

Answer: _____

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