-86.43% is the change from 398 to 54
Calculation steps:
[( 54 - 398 ) ÷ 398] x 100 = -86.43%
Formula
Percentage change = [(54 - 398) / 398] x 100
Subtract the new number by the original number
54 - 398 = -344
-344 ÷ 398 = -0.864321608040201
-0.864321608040201 x 100 = -86.43%