-90.66% is the change from 835 to 78
Calculation steps:
[( 78 - 835 ) ÷ 835] x 100 = -90.66%
Formula
Percentage change = [(78 - 835) / 835] x 100
Subtract the new number by the original number
78 - 835 = -757
-757 ÷ 835 = -0.9065868263473054
-0.9065868263473054 x 100 = -90.66%