Understanding Percentage Changes

The page explains how to calculate percentage increases and decreases, demonstrating مثال على حساب الفرق المئوي في الزيادة والنقصان through practical examples.

Definition: Percentage change represents how much larger or smaller an amount becomes compared to its original value, with the original value always being 100%.

Example: The first example shows a scenario where $50 increases by $20. The calculation demonstrates how to find the percentage increase:

1. Calculate the difference: $20
2. Divide by original amount: 20/50
3. Multiply by 100: 40% increase

Example: The second example illustrates a decrease from $50 by $15:

1. Calculate the decrease: $15
2. Divide by original amount: 15/50
3. Multiply by 100: 30% decrease

Highlight: The formula remains consistent whether calculating increases or decreases - the key difference is identifying whether the change is positive or negative.

Vocabulary:

• Percent of Increase (POI): The percentage by which a value has grown
• Percent of Decrease (POD): The percentage by which a value has reduced
• Original Value: The starting amount (considered as 100%)