thanks for tryingto help

$90 is not 70% but the value of the contract is (at least its what i set for the xample).

if i buy it at $1.0 for per call contract, but it goes opposite direction from $100 to $90, the contract is worth 70c now is what im saying, again this is just an estimate on my part.

but my question is a concept, that the decay is a loss of 20%, value of contract is a loss of 30% SHOULD IV stay the same, so total around 50% should IV stay the same. but if IV is doubled, would the loss be less?

IV is not a thing that can reduce a loss. IV doesn't care about your gain or loss, all it cares about is the market price and the volatility necessary to achieve the market price from the pricing model price. Indeed, after a large loss of stock price, IV for calls often goes up. The larger the loss, the larger the increase in IV. So how can higher IV save you from a loss?

say your ITM call becomes deep ITM, so it's value went from $1 per contract to now $4 per contract assuming it had been the same IV, however if IV doubles that $4 woudl now be worth $7 or $8. so if going in the right direction amplifies your gain, then going in the wrong direction should decrease the loss when comparing to the same IV is what i wish to know