Answer:
A decibel isn't a definite amount of anything. It's a unit used to compare
two powers.
1 decibel more = 25.89% more power
3 decibels more = twice as much power
3 decibels less = half as much power
10 decibels more = 10 times as much power
10 decibels less = 0.1 as much power
20 decibels more = 100 times as much power
You don't know how much any number of decibels is until you know
what it's compared to.