-95.51% is the change from 423 to 19
Calculation steps:
[( 19 - 423 ) ÷ 423] x 100 = -95.51%
Formula
Percentage change = [(19 - 423) / 423] x 100
Subtract the new number by the original number
19 - 423 = -404
-404 ÷ 423 = -0.9550827423167849
-0.9550827423167849 x 100 = -95.51%