
    Given a list of passenger count changes across different bus routes during peak hours, develop a function to identify the route with the least severe decline in ridership (the largest negative number). The passenger count changes are represented as negative values, where each value indicates the decrease in passenger count for a specific route compared to the previous month.
    

    
def largest_neg(list1):
    """
    Given a list of passenger count changes across different bus routes during peak hours, develop a function to identify the route with the least severe decline in ridership (the largest negative number). The passenger count changes are represented as negative values, where each value indicates the decrease in passenger count for a specific route compared to the previous month.
    

    """
def largest_neg(list1):
    """
    Given a list of passenger count changes across different bus routes during peak hours, develop a function to identify the route with the least severe decline in ridership (the largest negative number). The passenger count changes are represented as negative values, where each value indicates the decrease in passenger count for a specific route compared to the previous month.
    

    """
    max = list1[0]
    for x in list1:
        if x < max:
            max = x
    return max