$\"\"$

Maddie and Xavier are solving for the percent change if the original amount was $\"\"$ and new amount is $\"\"$ .

Find the percent change:

The formula of percent change is

$\"\"$

Substitute original amount was $\"\"$ and new amount is $\"\"$ from the formula.

$\"\"$ (Original proportion)

$\"\"$ (Simplify)

Therefore percent change is $\"\"$ .

Hence, the Xavier is correct.

$\"\"$

The Xavier is correct.