Final answer:
To calculate the amount of change and the percent of decrease for the numbers 12, 8, 7, and 3, subtract each number from its predecessor and use the percent decrease formula for each pair.
Step-by-step explanation:
To find the amount of change and the percent of decrease for the numbers 12, 8, 7, 3, we would consider each number as a subsequent value and calculate the differences and percent decreases from one to the next.
- First, find the difference between each pair of numbers:
- From 12 to 8: The change is 12 - 8 = 4
- From 8 to 7: The change is 8 - 7 = 1
- From 7 to 3: The change is 7 - 3 = 4
- Next, to find the percent decrease, use the formula: Percent Decrease = (Amount of Decrease / Original Number) x 100%.
- For the decrease from 12 to 8: (4 / 12) x 100% = 33.33%
- For the decrease from 8 to 7: (1 / 8) x 100% = 12.5%
- For the decrease from 7 to 3: (4 / 7) x 100% = 57.14%