-98.02% is the change from 655 to 13
Calculation steps:
[( 13 - 655 ) ÷ 655] x 100 = -98.02%
Formula
Percentage change = [(13 - 655) / 655] x 100
Subtract the new number by the original number
13 - 655 = -642
-642 ÷ 655 = -0.9801526717557252
-0.9801526717557252 x 100 = -98.02%