Answer:
[tex]-2.5\text{ \%}[/tex]Explanation:
Here, we want to calculate the percentage change in the price of bread
Mathematically, we have it as:
[tex]\frac{new\text{ price - old price}}{old\text{ price}}\text{ }\times\text{ 100 \%}[/tex]From the question:
new price = $3.12
old price = $3.20
Substituting the values, we have it that:
[tex]Percentage\text{ change = }\frac{3.12-3.2}{3.2}\text{ }\times\text{ 100 \% = -2.5 \%}[/tex]