Answer
$\dfrac{103}{125}=82.4\%$
Work Step by Step
You have to find the total number of blocks by adding the given colored blocks: $36+48+22+19=125$.
You have $125$ colored blocks and have to find the probability of picking a non-yellow block.
Since there are $22$ yellows blocks, there are $125-22=103$ non-yellow blocks:
$P(NY)=\dfrac{\text{number of non-yellow blocks}}{\text{total number of blocks}}$
$P(NY)=\dfrac{103}{125}=82.4\%$
