-52.51% is the change from 638 to 303
Calculation steps:
[( 303 - 638 ) ÷ 638] x 100 = -52.51%
Formula
Percentage change = [(303 - 638) / 638] x 100
Subtract the new number by the original number
303 - 638 = -335
-335 ÷ 638 = -0.5250783699059561
-0.5250783699059561 x 100 = -52.51%