CPI inflation is an economic measure that tracks the price of goods and services over time. It is an important economic indicator that reflects the overall health of the economy and helps to inform economic policy decisions. CPI inflation is calculated by looking at the average change in prices of a fixed basket of goods and services. This basket of goods and services is typically representative of the types of goods and services that are purchased by the average consumer. By tracking these changes in prices, CPI inflation allows governments to better understand the economic situation in their country and make informed policy decisions.