-54.86% is the change from 638 to 288
Calculation steps:
[( 288 - 638 ) ÷ 638] x 100 = -54.86%
Formula
Percentage change = [(288 - 638) / 638] x 100
Subtract the new number by the original number
288 - 638 = -350
-350 ÷ 638 = -0.54858934169279
-0.54858934169279 x 100 = -54.86%