Calculator for the exponential decay given the rate of decay per period
This function calculates the time or periods required to reduce its initial value by a specified factor given in % per period.
Alternatively, the decrease in % per period that is required to reduce the value by the specified factor in the specified time can be calculated.
Unlike the halflife calculator, you can determine here by which factor the initial value should be reduced. For example, enter 0.5 to halve or 0.25 to quarter. The decrease per period is given in %.

\(\displaystyle t = \frac{log(f)}{log(1\frac{d}{100})}\)
\(\displaystyle d=(e^{\left(\frac{log(f)}{t}\right)}1)\cdot 100\)
