-99.59% is the change from 493 to 2
Calculation steps:
[( 2 - 493 ) ÷ 493] x 100 = -99.59%
Formula
Percentage change = [(2 - 493) / 493] x 100
Subtract the new number by the original number
2 - 493 = -491
-491 ÷ 493 = -0.9959432048681541
-0.9959432048681541 x 100 = -99.59%