-63.64% is the change from 638 to 232
Calculation steps:
[( 232 - 638 ) ÷ 638] x 100 = -63.64%
Formula
Percentage change = [(232 - 638) / 638] x 100
Subtract the new number by the original number
232 - 638 = -406
-406 ÷ 638 = -0.6363636363636364
-0.6363636363636364 x 100 = -63.64%