What percentage of power loss is equivalent to a loss of 1 dB?

The formula for calculating a power ratio in decibels is dB = 10 * log10(P2/P1). To find the power ratio for a 1 dB loss, we set the equation to -1 = 10 * log10(P2/P1). To solve for the ratio of remaining power (P2/P1), divide -1 by 10 to get -0.1, and then calculate the antilog (10 to the power of -0.1). This equals approximately 0.794, meaning 79.4% of the original power remains after the loss. The question asks for the percentage of power *lost*, not the power remaining. To find this, subtract the 79.4% remaining power from 100%. The result is 100% - 79.4% = 20.6% power loss.