No, your answer is still wrong.Unlike danmand, I had already explicitly provided you with the basis of the 400% calculation (it's a fact, not a "claim"). I explicitly said we were talking about the range from 1 to 5 being a difference of 400 percentage points.
The 400 percentage-point difference means the top number in the range is four times greater than the starting number. In this case, it means multiplying 1 x 4.
I say 1 x 4 = 4. Adding that number to the starting number of 1, you get 1 + 4 = 5.
Since you say I'm wrong, please provide your answers to the following equations:
1 x 4 = ?
1 + (the answer from the first calculation) = ?
I can't wait to see your responses.
A 400% increase in what?
Just answer that question.