SQL variable is always 0

alter PROCEDURE sp_recordAssessmentScore
	-- Add the parameters for the stored procedure here
	@assessmentID int,
	@score decimal(2,2) output,
	@userID int
AS
BEGIN try
	-- SET NOCOUNT ON added to prevent extra result sets from
	-- interfering with SELECT statements.
	SET NOCOUNT ON;
 
    -- Insert statements for procedure here
	declare @questionID int;
	declare @scalarAnswer varchar(max);
	declare @totalRight int;
	declare @totalWrong int;
	declare @totalAnswers int;
 
	declare d_curs cursor fast_forward for
		select questionID, scalarAnswer
			from dbo.trn_assessmentSubmittedAnswers
			where assessmentID = @assessmentID
 
	open d_curs
 
	fetch next from d_curs
		into @questionID, @scalarAnswer
 
	if(@@fetch_status = 2)
	begin
		close d_curs
		return
	end
 
	while (@@fetch_status = 0)
	begin
		set @totalAnswers = @totalAnswers + 1
 
		declare @rightAnswer varchar(max)
	
		set @rightAnswer = (select answerText from dbo.trn_assessmentAnswers where correct = 1 and questionID = @questionID)
 
		if @rightAnswer = @scalarAnswer
		begin
			set @totalRight = @totalRight + 1
		end
		else
		begin
			set @totalWrong = @totalWrong + 1
		end
 
		fetch next from d_curs
			into @questionID, @scalarAnswer
	end
 
	close d_curs
 
	set @score = @totalAnswers / 100 * @totalRight
 
	-- Record score
	Exec dbo.sp_logEntry 'Assessment Score', @userID, @assessmentID, @score
END try
 
begin catch
	If @@TRANCOUNT > 0
		ROLLBACK
	Declare @errMsg nvarchar(4000), @errSeverity int, @errProcedure nvarchar(4000), @errLine int
	Select @errMsg = ERROR_MESSAGE(), 
		@errSeverity = ERROR_SEVERITY(), 
		@errProcedure = ERROR_PROCEDURE(),
		@errLine = ERROR_LINE()
	Exec dbo.sp_logEntry 'SYSTEM ERROR', @errMsg, @errSeverity, @errProcedure, @errLine
end catch