-62.85% is the change from 638 to 237
Calculation steps:
[( 237 - 638 ) ÷ 638] x 100 = -62.85%
Formula
Percentage change = [(237 - 638) / 638] x 100
Subtract the new number by the original number
237 - 638 = -401
-401 ÷ 638 = -0.6285266457680251
-0.6285266457680251 x 100 = -62.85%