Count Total Number of rows between two values when condition is met

I have the following data:

Date, Symbol, Close2021-01-01, AAPL, 102021-01-02, AAPL, 122021-01-03, AAPL, 32021-01-01, MSFT, 122021-01-02, MSFT, 202021-01-03, MSFT, 122021-01-04, MSFT, 12021-01-05, MSFT, 22021-01-06, MSFT, 3

I'd like to count the number of rows it takes until the next 'Close' value is less than the current row 'Close' value within the 'Symbol' group

My goal is to understand how many days it takes to get a lower price.

Expected Output

Date, Symbol, Close, Output2021-01-01, AAPL, 10, 22021-01-02, AAPL, 12,12021-01-03, AAPL, 3, NaN2021-01-01, MSFT, 12, 32021-01-02, MSFT, 20, 12021-01-03, MSFT, 12, 12021-01-04, MSFT, 1, NaN2021-01-05, MSFT, 2, 12021-01-06, MSFT, 1, NaN