-95.78% is the change from 450 to 19
Calculation steps:
[( 19 - 450 ) ÷ 450] x 100 = -95.78%
Formula
Percentage change = [(19 - 450) / 450] x 100
Subtract the new number by the original number
19 - 450 = -431
-431 ÷ 450 = -0.9577777777777777
-0.9577777777777777 x 100 = -95.78%