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A large store has only three departments, Clothing, Produce, and Electronics. The following figure shows the percentages of revenue and cost from the three departments for the years $2016, 2017$ and $2018$. The dotted lines depict percentage levels. So for example, in $2016$, $50\%$ of store's revenue came from its Electronics department while $40\%$ of its costs were incurred in the Produce department.

In this setup, Profit is computed as (Revenue – Cost) and Percentage Profit as
Profit/Cost $\times100\%$
It is known that

1.  The percentage profit for the store in $2016$ was $100\%$.
2.  The store’s revenue doubled from $2016$ to $2017$, and its cost doubled from $2016$ to $2018$.
3.  There was no profit from the Electronics department in $2017$.
4.  In $2018$, the revenue from the Clothing department was the same as the cost incurred in the Produce department.

What percentage of the total profits for the store in $2016$ was from the Electronics department ________

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