価格下落率計算機
Enter the old and new price to see the percentage decrease and how much money you save. Great for verifying markdowns, negotiating purchases and tracking deflation.
計算例
1,200 → 900: (300 ÷ 1,200) × 100 = 25%
計算方法
- Enter the old price.
- Enter the new, lower price.
- Read the percentage decrease and the amount saved.
計算式
Decrease % = ((Old Price − New Price) ÷ Old Price) × 100
解説
- Checking whether a “sale” price is really a bargain.
- Monitoring price drops on planned purchases.
関連する計算機
よくある質問
How do I calculate a price drop percentage?
Subtract the new price from the old price, divide by the old price, and multiply by 100. Example: 1,200 → 900 is a 25% decrease.
A 25% drop followed by another 25% drop is 50% off?
No — decreases compound: 100 → 75 → 56.25, which is a 43.75% total reduction, not 50%.