-28.19% is the change from 830 to 596
Calculation steps:
[( 596 - 830 ) ÷ 830] x 100 = -28.19%
Formula
Percentage change = [(596 - 830) / 830] x 100
Subtract the new number by the original number
596 - 830 = -234
-234 ÷ 830 = -0.2819277108433735
-0.2819277108433735 x 100 = -28.19%