-98.78% is the change from 493 to 6
Calculation steps:
[( 6 - 493 ) ÷ 493] x 100 = -98.78%
Formula
Percentage change = [(6 - 493) / 493] x 100
Subtract the new number by the original number
6 - 493 = -487
-487 ÷ 493 = -0.9878296146044625
-0.9878296146044625 x 100 = -98.78%