-82.16% is the change from 398 to 71
Calculation steps:
[( 71 - 398 ) ÷ 398] x 100 = -82.16%
Formula
Percentage change = [(71 - 398) / 398] x 100
Subtract the new number by the original number
71 - 398 = -327
-327 ÷ 398 = -0.821608040201005
-0.821608040201005 x 100 = -82.16%