67.45% is the change from 381 to 638
Calculation steps:
[( 638 - 381 ) ÷ 381] x 100 = 67.45%
Formula
Percentage change = [(638 - 381) / 381] x 100
Subtract the new number by the original number
638 - 381 = 257
257 ÷ 381 = 0.6745406824146981
0.6745406824146981 x 100 = 67.45%