-95.1% is the change from 408 to 20
Calculation steps:
[( 20 - 408 ) ÷ 408] x 100 = -95.1%
Formula
Percentage change = [(20 - 408) / 408] x 100
Subtract the new number by the original number
20 - 408 = -388
-388 ÷ 408 = -0.9509803921568627
-0.9509803921568627 x 100 = -95.1%