-0.25% is the change from 394 to 393
Calculation steps:
[( 393 - 394 ) ÷ 394] x 100 = -0.25%
Formula
Percentage change = [(393 - 394) / 394] x 100
Subtract the new number by the original number
393 - 394 = -1
-1 ÷ 394 = -0.0025380710659898475
-0.0025380710659898475 x 100 = -0.25%