Consider the following abbreviated financial statements for Weston Enterprises:

$\backslash$table$[[2019$ and $2020$ Partial Balance Sheets$],[$Assets$,$Liabilities and Owners' Equity$],[,2019,2020,,2019,2020],[$Current assets,$$1,253,$$ $1,308,$Current liabilities,$ $571$ $$,$$ $602],[$Net fixed assets,$5,782,6,023,$Long$-$term debt,$3,232,3,495]]$

$\backslash$table$[[\backslash$table$[[$WESTON ENTERPRISES$],[2020$ Income Statement$]]],[$Sales$,$$$17,547],[$Costs$,5,209],[$Depreciation$,1,536],[$Interest paid,$714]]$

a$.$ What was owners' equity for $2019$ and $2020?($Do not round intermediate calculations.$)$

b$.$ What was the change in net working capital for $2020?($Do not round intermediate calculations.$)$