Percentage Change Calculator

What is a Percentage Change?

Percentage change measures how much a value has increased or decreased relative to its original value, expressed as a percentage. It is one of the most important analytical tools in finance, business, and everyday life. Percentage change tells you not just that something changed, but how significant that change is relative to where it started. A price going from PKR 100 to PKR 150 is a 50% increase — the same absolute change of PKR 50 from PKR 1,000 to PKR 1,050 is only a 5% increase.

How to Use This Calculator

Enter the original (old) value — the starting point. Enter the new value — where it ended up. Click Calculate to see the percentage change, whether it is an increase or decrease, the absolute difference, and the multiplier (new/old). This tells you whether something grew, shrank, and by how much relative to its starting point.

💡 Pro Tips

• ✓Percentage change is directional — always calculate from the original to the new, not the other way around.
• ✓A 100% increase doubles the value. A 100% decrease means the value went to zero — be careful with sign interpretation.
• ✓For financial returns, use percentage change — it accounts for the size of the investment, unlike absolute gains.
• ✓When prices drop and then recover by the same percentage, you do not break even — a 50% drop needs a 100% gain to recover.
• ✓Use percentage change to track KPIs in business — revenue growth, user growth, cost changes — for meaningful trend analysis.

Who Uses This Calculator?

Investors tracking portfolio performance. Business analysts comparing quarterly or annual revenue growth. Students calculating score improvements between tests. Marketers measuring campaign performance changes. Anyone comparing prices, statistics, or data points across time periods.

Frequently Asked Questions