-32.41% is the change from 830 to 561
Calculation steps:
[( 561 - 830 ) ÷ 830] x 100 = -32.41%
Formula
Percentage change = [(561 - 830) / 830] x 100
Subtract the new number by the original number
561 - 830 = -269
-269 ÷ 830 = -0.3240963855421687
-0.3240963855421687 x 100 = -32.41%