-78.43% is the change from 394 to 85
Calculation steps:
[( 85 - 394 ) ÷ 394] x 100 = -78.43%
Formula
Percentage change = [(85 - 394) / 394] x 100
Subtract the new number by the original number
85 - 394 = -309
-309 ÷ 394 = -0.7842639593908629
-0.7842639593908629 x 100 = -78.43%