closed as too broad by PolyGeo♦ Aug 18 '16 at 21:49
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You have this option using reclass and raster calculator. Reclass the raster file and inspect the attribute table.
Create a new float field in the attribute table > Right click on the field to open Field calculator. Multiply the field by 0.0009
This usually works for me and i have to cross validate the total area.