You should have 0% when throttle fully closed
First check you have free play on throttle cables as per the manual.
If still not zero then a TPS / ISCV reset is needed.
If that doesn't sort it then may be time for a new primary TPS.
You may only get 0 to 92 or 93% throttle using the grip.
But should get up to 100% by rolling the cam on to the stop, as the grip doesn't let you go full