Koji Shinohara
Analyst · Andrew Strelzik with BMO Capital Markets
Thanks, Jimmy. I will now review results for our fiscal first quarter, which ended November 30, 2019. Comparisons up to the same period last year.
On a GAAP basis, net loss in the first quarter was $1.2 million or $0.15 per diluted share compared to net loss of $400,000 or $0.08 per diluted share in the prior year quarter. As Jimmy noted previously, our results were generally in line with our overall cadence that we laid out during our recent fourth quarter call.
Total sales increased 30% to $17.4 million from $13.4 million in the same period last year, primarily driven by incremental revenue from 6 new restaurants opened during and subsequent to the first quarter of fiscal 2019.
Comparable restaurant sales during the first quarter increased 7.9%, including a 3.1% increase in average check and 4.7% increase in traffic. As a reminder, we consider restaurant to be comparable after it's been open for at least 18 months prior to the start of accounting period represented, including those temporarily closed for renovation during the year. There are 14 restaurants included in the comparable store base during the first quarter of 2020.
Turning to expenses. Food and beverage costs as a percent of sales decreased 100 basis points to 32.6%. The decrease was primarily driven by a decrease in avocado prices, cheaper sourcing associated with 4 FY '19 restaurant openings in California and, to a lesser degree, reduced whey.
Labor and related cost as a percentage of sales increased 150 basis points to 32.3%. This increase was largely due to a higher wage rate in some of our newer restaurants, including 4 new units built in California since first quarter of fiscal 2019 as well as planned wage increases in existing stores.
Occupancy and related expenses as a percentage of sales increased 140 basis points to 8.3%. This increase was primarily driven by certain new stores opened in FY '19, with higher occupancy rate as well as greater preopening costs as compared to the same period last year due to the timing of new unit openings.
Overall, restaurant level contribution increased to $3 million from $2.5 million in the same period last year.
General and administrative costs increased by $1.2 million to $3.3 million in the first quarter of 2020 or to 19.1% of sales. G&A in the first quarter included approximately $900,000 of new expenses related to being a public company. Excluding public company costs, G&A would have increased by $300,000, primarily driven by employee compensation.
As we look at our fiscal 2020 G&A distribution, it's worth noting that due to the quarterly distribution of G&A costs, we incurred incremental costs in the first quarter that will not carry over into the remaining quarters of this fiscal year.
Adjusted EBITDA for the first quarter was negative $143,000 compared to last year's $500,000. The decrease was primarily due to the front-end weighted distribution of incremental public company costs in G&A.
Net interest income during this first quarter was $163,000 compared to net interest expense of $36,000 in the prior year period. We currently have 0 outstanding debt under our credit facility.
Based on our current growth path, we continue to believe our cash flow from operations and our existing cash balance will be sufficient to fund our capital expenditure needs for the foreseeable future.
Income tax benefit was approximately $4,000 compared to a benefit of $65,000 in the last year's fiscal first quarter. Income taxes in the first quarter of fiscal 2020 were negatively impacted by approximately $140,000 due to certain discrete tax true-up adjustment related to stock-based compensation expense.
And with that, I'll turn it back to Jimmy to discuss our outlook for our fiscal year 2020.