I am using the method outlined in a previous question - Extracting land cover type in Google Earth Engine? - to identify habitat type and area with a defined polygon. I would now like to take this information from different years to calculate forest cover loss over time. How is this best achieved? I am using google earth engine for this process.
You can find global forest loss/gain from 2000-2015 in the following raster:
var hansen = ee.Image("UMD/hansen/global_forest_change_2015_v1_3");
How you can use it is explained in this Google Earth Engine tutorial.