Louder than a lawn mower

Our new emergency whistle is 116 dB which is louder than my 96 dB lawn mower. A 20 dB difference means that the sound of the whistle is 100x more powerful than the lawn mower's sound. This means also that the amplitude is 10x bigger. I didn't know the bit about the amplitudes https://en.wikipedia.org/wiki/Decibel