It's not good at all.
Converting a toilet into an office is very bad for Feng Shui. If your office was converted from a toilet, it is recommended that you change to another office. Toilets are places where dirt and filth accumulate, and they are the source of many evils. In Feng Shui, there are many taboos, which can easily lead to various negative impacts. Even rooms that are just one wall away or directly above/below are considered inauspicious.
So, converting a toilet into an office is very bad for Feng Shui.

There are many Feng Shui taboos regarding the bathroom in an office. If you accidentally violate them, it can damage the Feng Shui of the office.
1. The toilet and mirror should not face the door of the bathroom.
2. The bathroom must have a window, and the window must be kept open. A window in the bathroom that is always open allows the foul smell and dampness to be expelled outside, keeping the air dry and fresh.
3. Use plants to eliminate foul odors. Greenery not only looks pleasant but also helps to eliminate the foul smell of the toilet. However, due to the high humidity and large temperature differences in the bathroom, it is not very conducive to the growth of many plants.
4. The bathroom must remain dry and well-ventilated. The office should maintain good air circulation. If the bathroom is sealed and not ventilated, it can be harmful to the health of the office staff. If the bathroom has no window, it is necessary to install an exhaust fan for ventilation.