-96.79% is the change from 405 to 13
Calculation steps:
[( 13 - 405 ) ÷ 405] x 100 = -96.79%
Formula
Percentage change = [(13 - 405) / 405] x 100
Subtract the new number by the original number
13 - 405 = -392
-392 ÷ 405 = -0.9679012345679012
-0.9679012345679012 x 100 = -96.79%