Question 989840
If the price of a cell phone, 10 years ago, was 4 times (300%) higher 
than it is now, can we say that the same cell phone is 300% cheaper 
now?
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4 times higher is 400% higher, not 300%.
1 time higher is a 100% increase
2 times higher is a 200% increase
3 times higher is a 300% increase
etc
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Nothing can be 300% cheaper.  If it's 100% cheaper, the price is zero (0).