-92.13% is the change from 394 to 31
Calculation steps:
[( 31 - 394 ) ÷ 394] x 100 = -92.13%
Formula
Percentage change = [(31 - 394) / 394] x 100
Subtract the new number by the original number
31 - 394 = -363
-363 ÷ 394 = -0.9213197969543148
-0.9213197969543148 x 100 = -92.13%