-17.83% is the change from 830 to 682
Calculation steps:
[( 682 - 830 ) ÷ 830] x 100 = -17.83%
Formula
Percentage change = [(682 - 830) / 830] x 100
Subtract the new number by the original number
682 - 830 = -148
-148 ÷ 830 = -0.1783132530120482
-0.1783132530120482 x 100 = -17.83%