-27.27% is the change from 638 to 464
Calculation steps:
[( 464 - 638 ) ÷ 638] x 100 = -27.27%
Formula
Percentage change = [(464 - 638) / 638] x 100
Subtract the new number by the original number
464 - 638 = -174
-174 ÷ 638 = -0.2727272727272727
-0.2727272727272727 x 100 = -27.27%