-95.56% is the change from 405 to 18
Calculation steps:
[( 18 - 405 ) ÷ 405] x 100 = -95.56%
Formula
Percentage change = [(18 - 405) / 405] x 100
Subtract the new number by the original number
18 - 405 = -387
-387 ÷ 405 = -0.9555555555555556
-0.9555555555555556 x 100 = -95.56%