-88.19% is the change from 830 to 98
Calculation steps:
[( 98 - 830 ) ÷ 830] x 100 = -88.19%
Formula
Percentage change = [(98 - 830) / 830] x 100
Subtract the new number by the original number
98 - 830 = -732
-732 ÷ 830 = -0.8819277108433735
-0.8819277108433735 x 100 = -88.19%