A sofa regularly sells for $470. The sale price is 408.90. Find the percent decrease of the sale price from the regular price.

To find the percent decrease of the sale price from the regular price, follow these steps:

1. **Subtract the sale price from the regular price** to find the amount of decrease:
   \[
   \text{Decrease} = 470 - 408.90 = 61.10
   \]

2. **Divide the decrease by the regular price**:
   \[
   \text{Percent Decrease} = \frac{\text{Decrease}}{\text{Regular Price}} = \frac{61.10}{470} \approx 0.130
   \]

3. **Convert the decimal to a percentage** by multiplying by 100:
   \[
   0.130 \times 100 = 13\%
   \]

So, the percent decrease is **13%**.

Would you like more details or have any questions about this? Here are some related problems for practice:

1. What is the sale price if the sofa has a 20% discount instead?
2. If the regular price was $500 and the sale price is $400, what would the percent decrease be?
3. How much would the sofa cost if the discount were 15% instead of 13%?
4. If a different item had the same 13% discount and its regular price was $600, what would its sale price be?
5. What would the percent decrease be if the sofa’s sale price dropped to $350?

**Tip:** To quickly find a percentage decrease, divide the difference between the original and new prices by the original price, then multiply by 100.

Learn how to calculate the percent decrease for a sofa that regularly sells for $470 and is on sale for $408.90. This step-by-step solution covers essential percentage concepts and formulas, suitable for students in Grades 6-8.

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