-60.19% is the change from 839 to 334
Calculation steps:
[( 334 - 839 ) ÷ 839] x 100 = -60.19%
Formula
Percentage change = [(334 - 839) / 839] x 100
Subtract the new number by the original number
334 - 839 = -505
-505 ÷ 839 = -0.601907032181168
-0.601907032181168 x 100 = -60.19%