Inflation rate between two prices calculator
Measure the movement from “previous price” to “current price”. The answer shows the relative increase or decrease and uses the first value as the starting point.
inflation rate between two prices calculator: Compare two equivalent values and measure their change.
Inflation rate between two prices calculator
How to calculate it
Subtract previous price from current price, divide the difference by the absolute starting value, and multiply by 100. A negative sign means a decrease.
- Insert the values in the formula, perform the division first, and round only the final answer.
- A positive answer indicates growth and a negative answer indicates a reduction. The percentage is measured against the starting value.
Applied example
When previous price moves from 100 € to 105.4 €, the percentage change is 5.4%.
Subtract previous price from current price, divide the difference by the absolute starting value, and multiply by 100. A negative sign means a decrease. A positive answer indicates growth and a negative answer indicates a reduction. The percentage is measured against the starting value.
Practical use
Measure how much a price or index rose from its base period.
For inflation and prices, use “previous price” as the reference. It must represent the full set or the starting point of the comparison.
Checks that matter
- Compare the same basket, quality and period; one product does not represent overall inflation.
- Do not treat the absolute difference as a percentage; divide it by the starting value first.
- Keep full precision during the calculation and round only the final answer to match the accuracy of the source data.
Frequently asked questions
What is the correct reference value?
For inflation and prices, use “previous price” as the reference. It must represent the full set or the starting point of the comparison.
Can the answer be greater than 100%?
Yes. This happens when the part exceeds the total or the final value is more than double the starting value.
How many decimal places should I use?
Keep full precision during the calculation and round only the final answer to match the accuracy of the source data.