overall span is the total revenue, the individual colours within are the share of each format. normally a graph like that would be fine but they mirrored it acr

overall span is the total revenue, the individual colours within are the share of each format. normally a graph like that would be fine but they mirrored it across the x axis because someone in the chain don't care about the data really they just want the appearance of statistics. that sort of mirrored plot is gaining traction is some science fields too and some people hate it, look up "violin plot"