-28.55% is the change from 830 to 593
Calculation steps:
[( 593 - 830 ) ÷ 830] x 100 = -28.55%
Formula
Percentage change = [(593 - 830) / 830] x 100
Subtract the new number by the original number
593 - 830 = -237
-237 ÷ 830 = -0.2855421686746988
-0.2855421686746988 x 100 = -28.55%