📚 Percentage Decrease
A percentage decrease (or discount) tells you how much a value has dropped compared to its original amount.
% Decrease = ((Original - New) ÷ Original) × 100
Example: Price dropped from $80 to $60
1
Find the difference: 80 - 60 = 20
2
Divide by original: 20 ÷ 80 = 0.25
3
Multiply by 100: 0.25 × 100 = 25% decrease
💡 Pro Tip: Finding Sale Price
If something is 30% off, you pay 70% of the original price.
Sale Price = Original × (100 - Discount%) ÷ 100
🎯 Try It Yourself
Try It Yourself
A $120 jacket is now $90. What's the percentage discount?
Find the discount amount ($30), divide by original ($120), multiply by 100
📝 Final Quiz
0 / 3
Test what you learned. Pick the correct answer for each question.
1. A $80 jacket is 25% off. Discount price?
Explanation:
$80 × (1 − 0.25) = $60.
2. A laptop dropped from $1,200 to $900. Percentage decrease?
Explanation:
($1200 − $900) ÷ $1200 × 100 = 25%.
3. Which discount saves more on a $200 item: 30% off, or $50 off?
Explanation:
30% of $200 = $60, more than $50.
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