-20.81% is the change from 394 to 312
Calculation steps:
[( 312 - 394 ) ÷ 394] x 100 = -20.81%
Formula
Percentage change = [(312 - 394) / 394] x 100
Subtract the new number by the original number
312 - 394 = -82
-82 ÷ 394 = -0.20812182741116753
-0.20812182741116753 x 100 = -20.81%