-95.57% is the change from 406 to 18
Calculation steps:
[( 18 - 406 ) ÷ 406] x 100 = -95.57%
Formula
Percentage change = [(18 - 406) / 406] x 100
Subtract the new number by the original number
18 - 406 = -388
-388 ÷ 406 = -0.9556650246305419
-0.9556650246305419 x 100 = -95.57%