-78.17% is the change from 394 to 86
Calculation steps:
[( 86 - 394 ) ÷ 394] x 100 = -78.17%
Formula
Percentage change = [(86 - 394) / 394] x 100
Subtract the new number by the original number
86 - 394 = -308
-308 ÷ 394 = -0.7817258883248731
-0.7817258883248731 x 100 = -78.17%