This should solve issue #888;

You have to specify the compile option if you are on a Atmel based CPU like Turnigy9x:

ACCURAT_THROTTLE_STATS=YES

The reason why this fix is not always activated:
- It costs about 18bytes additional flash
- There are rare cases you will notice the rounding issue at all.

Don't bother on Taranis, the fix is activated on this automatically.
changed rounding for gModelMax.
This should prevent counting THROTTLE faster than 100%, if
ACCURAT_THROTTLE_STATS is set to NO and ATMEL based Transmitters are used.
Merge pull request #929 from opentx/andreas/issue_888_throttle_trace_calc_not_very_accurate

Andreas/issue 888 throttle trace calc not very accurate