-99.27% is the change from 549 to 4
Calculation steps:
[( 4 - 549 ) ÷ 549] x 100 = -99.27%
Formula
Percentage change = [(4 - 549) / 549] x 100
Subtract the new number by the original number
4 - 549 = -545
-545 ÷ 549 = -0.9927140255009107
-0.9927140255009107 x 100 = -99.27%