-89.34% is the change from 394 to 42
Calculation steps:
[( 42 - 394 ) ÷ 394] x 100 = -89.34%
Formula
Percentage change = [(42 - 394) / 394] x 100
Subtract the new number by the original number
42 - 394 = -352
-352 ÷ 394 = -0.8934010152284264
-0.8934010152284264 x 100 = -89.34%