On Zscaler, Andy and 12k are right. I went to the SEC. Zscaler posts in a peculiar manner - at least to me. Here's what I got.
Condensed Consolidated Statements of Operations - USD ($)
3 Months Ended 9 Months Ended
$ in Thousands Apr. 30, 2019 Apr. 30, 2018 Apr. 30, 2019 Apr. 30, 2018
Revenue $79,128 $49,163 $216,728 $134,000
So it appears you need to add 9 months of 2019 to 1st 3 months of 2019 and then compare that sum to 2018.