-67.6% is the change from 858 to 278
Calculation steps:
[( 278 - 858 ) ÷ 858] x 100 = -67.6%
Formula
Percentage change = [(278 - 858) / 858] x 100
Subtract the new number by the original number
278 - 858 = -580
-580 ÷ 858 = -0.675990675990676
-0.675990675990676 x 100 = -67.6%