-95.06% is the change from 405 to 20
Calculation steps:
[( 20 - 405 ) ÷ 405] x 100 = -95.06%
Formula
Percentage change = [(20 - 405) / 405] x 100
Subtract the new number by the original number
20 - 405 = -385
-385 ÷ 405 = -0.9506172839506173
-0.9506172839506173 x 100 = -95.06%