-99.82% is the change from 543 to 1
Calculation steps:
[( 1 - 543 ) ÷ 543] x 100 = -99.82%
Formula
Percentage change = [(1 - 543) / 543] x 100
Subtract the new number by the original number
1 - 543 = -542
-542 ÷ 543 = -0.998158379373849
-0.998158379373849 x 100 = -99.82%