-13.52% is the change from 392 to 339
Calculation steps:
[( 339 - 392 ) ÷ 392] x 100 = -13.52%
Formula
Percentage change = [(339 - 392) / 392] x 100
Subtract the new number by the original number
339 - 392 = -53
-53 ÷ 392 = -0.13520408163265307
-0.13520408163265307 x 100 = -13.52%