-66.51% is the change from 839 to 281
Calculation steps:
[( 281 - 839 ) ÷ 839] x 100 = -66.51%
Formula
Percentage change = [(281 - 839) / 839] x 100
Subtract the new number by the original number
281 - 839 = -558
-558 ÷ 839 = -0.66507747318236
-0.66507747318236 x 100 = -66.51%