-19.29% is the change from 394 to 318
Calculation steps:
[( 318 - 394 ) ÷ 394] x 100 = -19.29%
Formula
Percentage change = [(318 - 394) / 394] x 100
Subtract the new number by the original number
318 - 394 = -76
-76 ÷ 394 = -0.19289340101522842
-0.19289340101522842 x 100 = -19.29%