-95.82% is the change from 478 to 20
Calculation steps:
[( 20 - 478 ) ÷ 478] x 100 = -95.82%
Formula
Percentage change = [(20 - 478) / 478] x 100
Subtract the new number by the original number
20 - 478 = -458
-458 ÷ 478 = -0.9581589958158996
-0.9581589958158996 x 100 = -95.82%