-56.54% is the change from 780 to 339
Calculation steps:
[( 339 - 780 ) ÷ 780] x 100 = -56.54%
Formula
Percentage change = [(339 - 780) / 780] x 100
Subtract the new number by the original number
339 - 780 = -441
-441 ÷ 780 = -0.5653846153846154
-0.5653846153846154 x 100 = -56.54%