66.15% is the change from 384 to 638
Calculation steps:
[( 638 - 384 ) ÷ 384] x 100 = 66.15%
Formula
Percentage change = [(638 - 384) / 384] x 100
Subtract the new number by the original number
638 - 384 = 254
254 ÷ 384 = 0.6614583333333334
0.6614583333333334 x 100 = 66.15%