Choose the correct answer below A. Divide the original amount by the amount of decrease. For example if there are 125 cookies and 25 of them are eaten, then the percent decrease is found by dividing 125 by 25 B. Multiply the amount of decrease by the onginal amount. For example,if there are 125 cookies and 25 of them are eaten, then the percent decrease is found by multiplying 25 and 125. C C. Divide the amount of decrease by the original amount. For example, if there are 125 cookies and 25 of them are eaten, then the percent decrease is found by dividing 25 by 125 D. Subtract the amount of decrease from the original amount, Then divide the result by the original amount. For example if there are 125 cookies and 25 of them are eaten then the percent decrease is found by dividing 100 by 125

## Step 1<br />The problem is asking us to identify the correct method to calculate the percentage decrease. The percentage decrease is a measure of how much a quantity has decreased in relation to its original amount.<br /><br />## Step 2<br />The formula to calculate the percentage decrease is:<br />### \(\frac{{\text{{amount of decrease}}}}{{\text{{original amount}}}} \times 100\% \)<br /><br />## Step 3<br />Looking at the options, we can see that option C correctly represents this formula. It suggests dividing the amount of decrease by the original amount, which is the first step in the formula.<br /><br />## Step 4<br />The other options either suggest incorrect operations or incorrect order of operations. For example, option A suggests dividing the original amount by the amount of decrease, which is not the correct order. Option B suggests multiplying the amount of decrease by the original amount, which is also not the correct operation. Option D suggests subtracting the amount of decrease from the original amount and then dividing the result by the original amount, which is not the correct order of operations.