-55.86% is the change from 768 to 339
Calculation steps:
[( 339 - 768 ) ÷ 768] x 100 = -55.86%
Formula
Percentage change = [(339 - 768) / 768] x 100
Subtract the new number by the original number
339 - 768 = -429
-429 ÷ 768 = -0.55859375
-0.55859375 x 100 = -55.86%