many times Ran the same job without any change still it ran differently like success cases working differently

I had the 82 cases job and I ran it 3 times at 3 times it gives me the different different pass results.
First time its passed 75%
second time it may passed 67%
third time it may passed 94%

3 times ran after by after continuous without any change.

I’m stuck in with this biggest bug , please give me the result for this as soon as possible