37% of property taxes goes to the province. The province increased the amount for 2020 by $15.5m over the year before. So the pie needs to get bigger for the province to get it's piece and the City's piece to stay the same size.
Other budget shortfalls thrust onto the city by the province included taking a larger piece of police fines (26.7% up to 40% about $10m per year), charging municipalities for forensic DNA analysis ($2m per year), and not helping cover the cost of Cannabis-related policing even though Cannabis tax is bringing in $30m per year and growing to $84m by 2022-23 ($1m per year). These directly effect CPS to $13m this year.
The province also decided to reduce the grants it payed in place property tax on its buildings in Calgary. I haven't seen a lot of numbers on this, but it equates to about $5m per year. There are also changes to the Municipal Sustainability Initiative and City Charter that will have big effects in 2022 and beyond.
https://www.calgary.ca/financialfacts has the breakdowns of property taxes, cost of services, and a bunch of other info.