All types of percentage calculations — increase, decrease, difference, and more
Percentages are one of the most practical mathematical concepts used in daily life. Whether you are calculating a store discount, estimating your tax, or tracking your fitness progress, understanding how "percent" works is essential for making informed decisions.
The word "percent" comes from the Latin per centum, which literally means "by the hundred." Essentially, a percentage is a way of expressing any number as a fraction of 100.
To use our calculator effectively, it helps to understand the math behind the results. Here are the three most common formulas used in our tool:
Used to find how much a value has grown (e.g., a salary hike or population growth).
Used to find the drop in value (e.g., a clearance sale discount).
Used when you want to compare two values that are part of the same category but don't have an "old" or "new" relationship.
Our calculator is built for simplicity and speed.
Formula:
(X ÷ 100) × Y
Example: What is 25% of 200?
(25 ÷ 100) × 200 = 50
Formula:
(X ÷ Y) × 100
Example: 50 is what percent of 200?
(50 ÷ 200) × 100 = 25%
Formula:
((New Value − Old Value) ÷ Old Value) × 100
Formula:
((Old Value − New Value) ÷ Old Value) × 100
Original Value × (1 + X/100)
Original Value × (1 − X/100)
If a product costs ₹2000 and has a 30% discount:
2000 × 30 ÷ 100 = ₹600
Final Price = ₹1400
For a product worth ₹1000 with 18% GST:
1000 × 18 ÷ 100 = ₹180
Total Price = ₹1180
If you score 420 out of 500:
(420 ÷ 500) × 100 = 84%
If salary increases from ₹50,000 to ₹55,000:
((55,000 − 50,000) ÷ 50,000) × 100 = 10%
Instant results without manual math.
Avoid human calculation errors.
Handle all percentage-related calculations.
Manually calculating percentages can take time, especially when dealing with multiple values. A percentage calculator saves time and eliminates mistakes.
(Part ÷ Whole) × 100
((New − Old) ÷ Old) × 100
((Original Price − Sale Price) ÷ Original Price) × 100