-98.58% is the change from 493 to 7
Calculation steps:
[( 7 - 493 ) ÷ 493] x 100 = -98.58%
Formula
Percentage change = [(7 - 493) / 493] x 100
Subtract the new number by the original number
7 - 493 = -486
-486 ÷ 493 = -0.9858012170385395
-0.9858012170385395 x 100 = -98.58%