-86.29% is the change from 394 to 54
Calculation steps:
[( 54 - 394 ) ÷ 394] x 100 = -86.29%
Formula
Percentage change = [(54 - 394) / 394] x 100
Subtract the new number by the original number
54 - 394 = -340
-340 ÷ 394 = -0.8629441624365483
-0.8629441624365483 x 100 = -86.29%