The decline in public debt charges was attributable to a lower average effective interest rate on interest - bearing debt. (3dpolicy.ca)
The annual effective interest rate calculator exactly as you see it above is 100 % free for you to use. (calculatorpro.com)
Public debt charges declined by $ 1.6 billion, reflecting the impact of lower effective interest rates, as the stock of interest - bearing debt increased. (3dpolicy.ca)