Percent Change

The video tutorial explains how to calculate the percent change in value, using a baseball card as an example. Initially purchased for $4, the card's value increased to $7 after a grand slam. The percent change is calculated by comparing the difference between the original and new values to the original value, using a specific formula. The tutorial walks through the calculation process, resulting in a 75% increase. The lesson concludes with a summary of the key concepts learned.

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