-98.38% is the change from 493 to 8
Calculation steps:
[( 8 - 493 ) ÷ 493] x 100 = -98.38%
Formula
Percentage change = [(8 - 493) / 493] x 100
Subtract the new number by the original number
8 - 493 = -485
-485 ÷ 493 = -0.9837728194726166
-0.9837728194726166 x 100 = -98.38%