Percentages appear everywhere in daily financial life: GST on a price, the salary increase percentage in a counteroffer, your exam score out of a total, or the annual return on an investment. This three-in-one tool handles the most common scenarios without switching pages — find what percentage X is of Y, calculate X% of a value, or measure the percentage change between two figures. Results are instant and shown with a worked breakdown.
What is X% of Y?
X is What % of Y? (Reverse Lookup)
Percentage Change (Growth/Decline)
What Does This Percentage Calculator Do?
This is not a generic math tool. It is designed to solve the three exact percentage problems you face in daily financial life: checking if your salary raise beats inflation, verifying if a store discount is real or fake, and calculating exact tax amounts (like GST or Withholding Tax) before making a payment.
During performance reviews, HR often presents raises as a flat number (e.g., "We are increasing your salary from Rs. 150,000 to Rs. 165,000"). Use the Percentage Change calculator to find the exact growth rate.
In this case, the increase is exactly +10.00%.
If Pakistan's current inflation rate is 18%, a 10% raise means your real purchasing power has actually decreased by 8%.
The Decision: Calculate your "breakeven" raise using the X% of Y tool. If inflation is 18%, calculate 18% of 150,000 = Rs. 27,000. You need a raise to Rs. 177,000 just to maintain your current lifestyle.
Retailers frequently use percentage tricks during "Blessed Friday" or "Eid Sales". They mark up the base price, then apply a large percentage discount.
A jacket normally costs Rs. 4,000. The store marks the "original price" up to Rs. 6,000 and offers "40% Off!".
Use the X% of Y tool: 40% of 6,000 = 2,400. You pay Rs. 3,600.
Use the Percentage Change tool between the normal price (4,000) and your price (3,600). The actual discount you received is only 10%, not 40%.
Real-Life Scenario 3: Reverse-Calculating GST and Taxes
When you are quoted a "tax-inclusive" price in Pakistan, figuring out the actual base price is confusing. You cannot simply subtract 18% from the total.
A vendor quotes you Rs. 118,000 for a laptop, "inclusive of 18% GST."
To find the base price, do not calculate 18% of 118,000. That gives the wrong answer.
Use the Reverse Lookup logic: Rs. 118,000 is 118% of the base price. Divide 118,000 by 1.18. The exact base price is Rs. 100,000. The GST amount is exactly Rs. 18,000.
Real-Life Scenario 4: Property & Rental Yields
If you buy a plot for Rs. 5,000,000 and sell it 3 years later for Rs. 6,500,000, use the Percentage Change tool to find your total absolute return.
The change is +30% over 3 years.
This is an average of 10% per year (not accounting for compounding).
If a standard savings account was offering 15% per year during that time, your property investment actually underperformed cash in the bank.
Common Mistakes That Cost People Money
Percentage vs percentage points: If a bank loan interest rate goes from 16% to 20%, the bank says it increased by "4 percent". It did not. It increased by 4 percentage points. The actual cost of your interest just increased by 25% ((20-16)/16 * 100).
Sequential discounts: A 20% discount followed by an extra 10% loyalty discount is NOT a 30% discount. It is applied sequentially. (100 * 0.8 * 0.9) = 72. Your total discount is only 28%.
Frequently Asked Questions
How do I calculate GST on a price in Pakistan?
Pakistan’s standard GST rate varies but is typically 18%. GST Amount = Price × 0.18. Total price with GST = Price × 1.18. To find the GST-exclusive price from a GST-inclusive amount: divide the total by 1.18.
How do I calculate percentage marks in Pakistan?
Use the "What % is X of Y" calculator above. Enter your Marks Obtained as X, and Total Marks as Y. For example, 875 out of 1,100 = 79.54%.
What is the difference between markup and margin?
Markup is based on cost; Margin is based on selling price. A 25% markup on a PKR 1,000 cost gives a selling price of PKR 1,250. But your profit margin is only 20% (250 ÷ 1,250 = 20%).
📅 Last Updated: May 2026📋 Source: Standard Mathematical Formulas✍️ Written by: Shyraz Habib✓ Reviewed for accuracy: May 2026
Standard mathematical percentage formulas — verified for accuracy. No external regulatory dependency. This calculator was built by Shyraz Habib, creator of AKCalc.