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
It is known that
- The percentage profit for the store in $2016$ was $100\%$.
- The store’s revenue doubled from $2016$ to $2017$, and its cost doubled from $2016$ to $2018$.
- There was no profit from the Electronics department in $2017$.
- In $2018$, the revenue from the Clothing department was the same as the cost incurred in the Produce department.
What was the approximate difference in profit percentages of the store in $2017$ and $2018$?