To calculate inflation rate relative to the base year, simply subtract the current CPI by 100 (and add percentage sign). Naturally, the CPI of the base year is 100 (ratio of 1 relative to itself).
To calculate inflation rate relative to the base year, simply subtract the current CPI by 100 (and add percentage sign). Naturally, the CPI of the base year is 100 (ratio of 1 relative to itself).