-95.42% is the change from 393 to 18
Calculation steps:
[( 18 - 393 ) ÷ 393] x 100 = -95.42%
Formula
Percentage change = [(18 - 393) / 393] x 100
Subtract the new number by the original number
18 - 393 = -375
-375 ÷ 393 = -0.9541984732824428
-0.9541984732824428 x 100 = -95.42%