-87.78% is the change from 835 to 102
Calculation steps:
[( 102 - 835 ) ÷ 835] x 100 = -87.78%
Formula
Percentage change = [(102 - 835) / 835] x 100
Subtract the new number by the original number
102 - 835 = -733
-733 ÷ 835 = -0.8778443113772455
-0.8778443113772455 x 100 = -87.78%