-99.19% is the change from 494 to 4
Calculation steps:
[( 4 - 494 ) ÷ 494] x 100 = -99.19%
Formula
Percentage change = [(4 - 494) / 494] x 100
Subtract the new number by the original number
4 - 494 = -490
-490 ÷ 494 = -0.9919028340080972
-0.9919028340080972 x 100 = -99.19%