You can compare Year vs Year results using a Comparison Card. Comparison Cards allow you to view your data comparatively, X vs Y, so you can view differences in performance from one year to the next, variances between budgets and actuals, or the projected divergence between two different Forecasts you've created in Futrli.
First, create a Comparison Card. You can do this by selecting to 'Add Card' at the top of the Board in question and then by selecting a 'Comparison Card' from the 'Build Your Own' section:
Year vs Year will be selected by default on the Card:
Once you are happy with the data on the Card, simply click 'Done' to flip the Card and view your comparison.