I'm not going to say 100db isn't loud but db is a logarithmic scale, so even 110 down to 100 isn't a 9% reduction but an order of magnitude drop. Literally the difference between a jackhammer and a nail gun.

Sound drops 4x for each 2x increase in distance from the source. So another way to put it is, if you cut sound by 10x, you are cutting the distance of severely noise polluted area around by more than 4x.