-97.39% is the change from 498 to 13
Calculation steps:
[( 13 - 498 ) ÷ 498] x 100 = -97.39%
Formula
Percentage change = [(13 - 498) / 498] x 100
Subtract the new number by the original number
13 - 498 = -485
-485 ÷ 498 = -0.9738955823293173
-0.9738955823293173 x 100 = -97.39%