The Correct Way to Describe the Change
If you want to explain the relationship between 100 and 13, you have two accurate options:
A. Percentage Decrease
This measures how much of the original "100" was taken away to get to 13.
- The Calculation: $\frac{100 - 13}{100} \times 100$
- The Result: A 87% decrease.
B. Times-Fold Reduction (The "7" Confusion)
This is likely where the "700%" idea came from. If you divide 100 by 13, you get approximately 7.69.
- The Result: You could say 100 is "nearly 8 times larger" than 13, or that 13 is roughly "1/8th" of the original size.
- While 100 is about 769% of 13, saying it "reduced by 700%" flips the logic incorrectly.
