-33.07% is the change from 384 to 257
Calculation steps:
[( 257 - 384 ) ÷ 384] x 100 = -33.07%
Formula
Percentage change = [(257 - 384) / 384] x 100
Subtract the new number by the original number
257 - 384 = -127
-127 ÷ 384 = -0.3307291666666667
-0.3307291666666667 x 100 = -33.07%