From CAP698 section 3 page
9:
Gradient = ROC/TAS x 6000/6080.
The latter part of the formula 6000/6080 to all intent and purposes can be
ignored as its almost 1. But we must still remember to give the answer as a %.
So Gradient = ROC/TAS = 1000/194 = 5.15%
Each 5% of gradient is roughly equal to a 3 degree climb.