2015 Q1 saw a big increase in net loss which was explained as:
Etsy's net loss increased as a result of non-cash, non-operating expenses related to the updated global corporate structure that we implemented on January 1, 2015. These expenses include a non-cash $10.5 million increase to Etsy's tax provision, which brings Etsy's total tax provision to $10.7 million. These expenses also include a non-cash currency exchange loss of $20.9 million largely due to intercompany debt incurred related to the structure. Etsy's revised corporate structure was implemented to more closely align with its global operations and future expansion plans outside the U.S.
Last reported quarter 2017 Q3 it was $25.80 million, down by -1,176% from $-2.40 million the same quarter a year before.
Since 2015 it decreased by -45%, from $-54.06 million to $-29.90 million in 2016.
Source: Etsy Quarterly Results.