-28.06% is the change from 638 to 459
Calculation steps:
[( 459 - 638 ) ÷ 638] x 100 = -28.06%
Formula
Percentage change = [(459 - 638) / 638] x 100
Subtract the new number by the original number
459 - 638 = -179
-179 ÷ 638 = -0.28056426332288403
-0.28056426332288403 x 100 = -28.06%