Percentage Components: Percentage calculations involve three main parts – the base value (original amount), percentage rate (relative percentage), and percentage value (calculated absolute amount).

Applying Percentage Discount: To find a discount, multiply the base value by the percentage rate. For a £10 item with a 20% discount, the discount is £2, making the final price £8.

Increasing base value by percentage: When prices increase, multiply the base value by the percentage rate and add it back. A £20 item with a 10% increase costs £22 after adding £2.

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