-51.6% is the change from 814 to 394
Calculation steps:
[( 394 - 814 ) ÷ 814] x 100 = -51.6%
Formula
Percentage change = [(394 - 814) / 814] x 100
Subtract the new number by the original number
394 - 814 = -420
-420 ÷ 814 = -0.515970515970516
-0.515970515970516 x 100 = -51.6%