Table of Contents
Percentage Decrease Formula
The Formula to Calculate Percentage Decrease is given as under
Percentage Decrease = (Decreased Value/Original Value)*100
Decreased Value = Original Value – New Value
% Decrease = ((Original Value – New Value)/Original Value)*100
Have a look at the Percentage Decrease Example Questions provided below to get a grip on the concept.
How to Calculate the Percentage Decrease?
Go through the below-listed guidelines to find the Percentage Decrease. They are as such
- Firstly find the Decreased Value i.e. Original Value – New Value.
- Divide it with the Original Value.
- Multiply the fraction with 100 and place a % sign at the end.
Example Questions on Percentage Decrease
1. Price of Sugar Decreases from $9 to $7.5 per Kg? What is the Percentage Decrease in the Price of Sugar?
Solution:
Original Price of the Sugar = $9
New Price of the Sugar = $7.5
Decreased Price of Sugar = $9- $7.5
= $1.5
Percentage Decrease = (Decreased Value/Original Value)*100
= ($1.5/$9)*100
= 16.66 %
Therefore, the Percentage Decrease in the Price of Sugar is 16.66%.
2. A shopkeeper sells a pair of pens for Rs. 30 initially. He then reduced the price of the pair of pens to Rs. 24. Calculate the Percentage Decrease in the cost of pens?
Solution:
Original Cost of Pair of Pens = Rs. 30
New Cost of Pair of Pens = Rs. 24
Decreased Value = Original Cost – New Cost
= Rs. 30 – Rs. 24
= Rs. 6
Percentage Decrease = (Decreased Value/Original Value)*100
= (6/30)*100
= 20%
Therefore, Percentage Decrease in the cost of pens is 20%.
3. Find the Decreased Value if 400 decreased by 25%?
Solution:
New Value 25%(400)
= 25/100*400
= 100
Decreased Value = Original Value – New Value
= 400 – 100
= 300
4. A fruit seller used to sell bananas for Rs. 30 per dozen. Later, he reduced the cost of a dozen bananas by 15%. Find the price of a dozen bananas now?
Solution:
New Prize = 15% of 30
= 15/100*30
= 450/100
= 4.5
Decreased Value = Original Price – New Prize
= 30- 4.5
= 25.5
Fruit Seller sells bananas Rs. 25.5/- a Dozen.
5. The membership card of a club cost was reduced by 10% and costs Rs. 450 now. What was the original price of the membership card before its cost is reduced?
Solution:
New Value = 10% of 450
= 10/100*450
= 45
Membership Card of a Club Cost initially = Reduced Price + Cost of Membership Card of Club after Reducing
= 45+ 450
= 495
The original Price of a membership card of the club is Rs. 495.
