Emily spent $55 from her savings account on a new dress explain how to describe the change in emilys savings balance in two different ways

You can either express the decrease that happened in the account savings by integers. To do this you simply subtract 55$ from the initial amount in the account. This is expressed as:
initial amount - 55$

or, you can express the decrease in the form of percentage by calculating how much is 55$ from the total amount. This is expressed as:
(5/initial amount) x 100

Well if you have 20 bats you probably want 20 balls? you don’t have enough context to answer the question.