-16.91% is the change from 408 to 339
Calculation steps:
[( 339 - 408 ) ÷ 408] x 100 = -16.91%
Formula
Percentage change = [(339 - 408) / 408] x 100
Subtract the new number by the original number
339 - 408 = -69
-69 ÷ 408 = -0.16911764705882354
-0.16911764705882354 x 100 = -16.91%