n = Qн - Qx/Qн * 100%
n = 150 * 10^3 - 100 * 10^3/150 * 10^3 = 50 * 10^3/150 * 10^3 = 50/150 = 1/3 * 100% ~ 33%
n = Qн - Qx/Qн * 100%
n = 150 * 10^3 - 100 * 10^3/150 * 10^3 = 50 * 10^3/150 * 10^3 = 50/150 = 1/3 * 100% ~ 33%