-32.53% is the change from 830 to 560
Calculation steps:
[( 560 - 830 ) ÷ 830] x 100 = -32.53%
Formula
Percentage change = [(560 - 830) / 830] x 100
Subtract the new number by the original number
560 - 830 = -270
-270 ÷ 830 = -0.3253012048192771
-0.3253012048192771 x 100 = -32.53%