-86.99% is the change from 830 to 108
Calculation steps:
[( 108 - 830 ) ÷ 830] x 100 = -86.99%
Formula
Percentage change = [(108 - 830) / 830] x 100
Subtract the new number by the original number
108 - 830 = -722
-722 ÷ 830 = -0.8698795180722891
-0.8698795180722891 x 100 = -86.99%