Reviewing the revenue of each region is important to Music Matters to best understand how to support their globalisation efforts.By what percentage did Canada increase or decrease their revenues from Year $3$ to Year $4?20\mathrm{.}81\%44\mathrm{.}80\%12\mathrm{.}03\%-1\mathrm{.}00\%34\mathrm{.}27\%$