How Is ‘Delta’ Used to Estimate the Change in an Option’s Price?

Delta is used as a linear approximation to estimate how much an option's premium will change for a small, $1 movement in the underlying asset's price. For example, a Call Option with a Delta of 0.60 is expected to increase in value by $0.60 if the underlying crypto price rises by $1.00.

However, this is only an estimate, as Delta itself changes as the underlying price moves, which is measured by Gamma.