In the comments and/or report documentation, you could mention the alternative method for calculating percent decline.
For a regression equation, Ln (Nt) = α + βt the percentage decline over t years (number of years in time series) can be calculated as: (1-exp(βt))*100.
In the comments and/or report documentation, you could mention the alternative method for calculating percent decline. For a regression equation, Ln (Nt) = α + βt the percentage decline over t years (number of years in time series) can be calculated as: (1-exp(βt))*100.