-68.18% is the change from 638 to 203
Calculation steps:
[( 203 - 638 ) ÷ 638] x 100 = -68.18%
Formula
Percentage change = [(203 - 638) / 638] x 100
Subtract the new number by the original number
203 - 638 = -435
-435 ÷ 638 = -0.6818181818181818
-0.6818181818181818 x 100 = -68.18%