Calculating Percent Change with YouTube Subscribers

Math with Mr. J

This educational video provides a clear, step-by-step tutorial on how to calculate percent change using a relatable real-world example involving YouTube subscribers. The narrator, "Mr. J," walks viewers through the standard formula for percent change: subtracting the original value from the new value to find the amount of change, dividing that result by the original value, and finally multiplying by 100 to convert the decimal to a percentage. The video specifically tackles a word problem where a YouTuber's subscriber count increases from 1,572 to 6,390 over a year. It covers essential mathematical procedures including setting up the equation, performing subtraction with large numbers, long division (or decimal calculation), interpreting decimal results, and rounding to the nearest whole percent. The video effectively models how to organize work on paper for clarity. Teachers can use this video to introduce or reinforce the concept of percent increase and decrease. The use of YouTube analytics makes the abstract math concept immediately relevant to digital-native students. It is particularly useful for demonstrating the logic behind percent increases that exceed 100%, helping students understand that a value more than doubling results in a percent increase greater than 100%.