-77.43% is the change from 638 to 144
Calculation steps:
[( 144 - 638 ) ÷ 638] x 100 = -77.43%
Formula
Percentage change = [(144 - 638) / 638] x 100
Subtract the new number by the original number
144 - 638 = -494
-494 ÷ 638 = -0.774294670846395
-0.774294670846395 x 100 = -77.43%