-53.92% is the change from 638 to 294
Calculation steps:
[( 294 - 638 ) ÷ 638] x 100 = -53.92%
Formula
Percentage change = [(294 - 638) / 638] x 100
Subtract the new number by the original number
294 - 638 = -344
-344 ÷ 638 = -0.5391849529780565
-0.5391849529780565 x 100 = -53.92%