Answer :
The percentage change in the price level from 1970 to 1990 is 237%.
CPI stands for the Consumer Price Index, which is an economic measure of changes in the prices of goods and services purchased by households. The CPI is used to calculate inflation and is closely watched by governments, businesses, and consumers.
Calculate the difference in price level between 1970 and 1990:
130.7 - 38.8 = 91.9
Divide the difference by the price level in 1970:
91.9 / 38.8 = 2.37
Convert to a percentage:
2.37 x 100 = 237%
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