Compare old new and new sheet rows and columns

I have 2 sheets. 1 - Old Data, 2 - New Data which are updated quarterly.Both have 22 columns (in same order) and several 1000 lines of data.(not same qty)

I need to compare both sheets to identify all changes:

• Added or Removed Rows
• Cell content changes

Column A on both sheets contains a 6 digit identifier for each customer. However, this number is repeated where there are multiple line items for that customer

For example:example cust data

all help appreciated!