Answer:
The two ways are:
Emily's savings balance = x - $55
Emily's savings balance % = 
Step-by-step explanation:
Consider the provided information.
Emily spent $55 from her savings on a new dress.
We need to find two different ways to describe the changes in Emily's savings balance.
Let x is the amount she had initial.
She spent $55 so use a negative sign to represents spent amount.
Thus, Emily's savings balance = x - $55
or, we can show this with the help of percentage.
We can calculate how much is 55$ from the total amount.
This can be represented as:
Emily's savings balance % = 
Hence, the two ways are:
Emily's savings balance = x - $55
Emily's savings balance % = 