-88.16% is the change from 321 to 38
Calculation steps:
[( 38 - 321 ) ÷ 321] x 100 = -88.16%
Formula
Percentage change = [(38 - 321) / 321] x 100
Subtract the new number by the original number
38 - 321 = -283
-283 ÷ 321 = -0.881619937694704
-0.881619937694704 x 100 = -88.16%