[QUOTE=I track all my expenses in an Excel spreadsheet for the following:
Food & Kitchen Supplies
Toys & Equipment
Craft Supplies
Field Trips & Outings
Gifts & Seasonal Celebrations
Office Expenses
Advertising & Website
Daycare area only Maintenance & Repairs
% of Household maintenance
Professional Development
% Vehicle Expenses
Business Liability Insurance
% of annual Mortgage Interest
% of annual Property Tax
% of annual Gas bill total
% of annual Hydro bill total
Rogers Internet bill for business
Cell phone bill for business
Bell - additional services for answering machine, call display[/QUOTE]

How do you calculate the % for mortgage interest, property tax, hydro, etc?