Basically, they just raised their prices by 18% and blamed it on the greedy, useless employees.
No, it’s worse than that.
Look at how the tips are calculated. They use the base bill of 95.60, not the bill after the service charge has been applied.
If they rolled an 18% increase into their prices, the calculated tip would also rise 18%. But it didn’t.
So in addition to effectively raising their prices and blaming their employees for it, they are also stiffing their employees by low-balling their tip calculations.