-99.41% is the change from 339 to 2
Calculation steps:
[( 2 - 339 ) ÷ 339] x 100 = -99.41%
Formula
Percentage change = [(2 - 339) / 339] x 100
Subtract the new number by the original number
2 - 339 = -337
-337 ÷ 339 = -0.9941002949852508
-0.9941002949852508 x 100 = -99.41%