Interpret coefficient of negative binomial regression

Am I understanding this right? I have run a negative binomial regression on overdispersed count data (Y is number of litter items found, and X is the distance to the shoreline), in SPSS. The omnibus test result is highly significant but I’m quite puzzled when interpreting the coefficient in the parameter estimate:

If I understand correctly, for every increase in X (i.e. the independent variable), I will have a decrease in log count in the Y (i.e dependent variable). The result of this is significant so I can trust it. When I look at the coefficient B (-,042) I understand it being in natural logarithm form, so I could interpret it as a decrease of 3,17 quantity of litter? (that is changing -,042 in natural log form to a standard numeric form).