Error Vector Magnitude (EVM) db to percentage calculation

For converting  Error Vector Magnitude (EVM) from db to %(percentage), we can use the below formula

EVM in % = 100 * (10^(EVM in dB/20))


Example:

EVM = -18 dB

EVM % = [100 * 10^(-18/20)] %
EVM % = [100 * 0.125892] %
EVM % = 12.589 %