-59.48% is the change from 839 to 340
Calculation steps:
[( 340 - 839 ) ÷ 839] x 100 = -59.48%
Formula
Percentage change = [(340 - 839) / 839] x 100
Subtract the new number by the original number
340 - 839 = -499
-499 ÷ 839 = -0.5947556615017878
-0.5947556615017878 x 100 = -59.48%