Unit transformation
You can select one of the following formulas to modify units of displayed time series:
Period-to-period change
Subtract the previous value from the current value. The formula is:
current period value – previous period value
Period-to-period % change
Subtract the previous value from the current value, then divide by the absolute value of the current value. Multiply the result by 100. The formula is:
(current period value - previous period value) / ABS(previous period value) * 100
Year-to-year change
Subtract the previous value from the current value. The formula is:
current year value – previous year value
Year-to-year % change
Subtract the previous value from the current value, then divide by the absolute value of the current value. Multiply the result by 100. The formula is:
(current year value - previous year value) / ABS(previous year value) * 100
The chart area will automatically update once you click on your selected unit modification.
Disclaimer: The above formulas are generic and may not be in line with the official transformations used by different datasets or time series. Refer to the technical notes and methodology for the specific dataset related transformations:
ECB Data Portal - Technical notes