O texto não diz de onde sai o 169,2%.

KristinaTT, o valor é resultado do cálculo de 3,9% para 10,5%, conforme este trecho abaixo do relatório original:

Many are not taking this lying down: more and more technologists are finding freedom in freelance and self-employment.
The percentage of freelance or self-employed responses jumped from 3.9% to 10.5% just this year.