-30.73% is the change from 833 to 577
Calculation steps:
[( 577 - 833 ) ÷ 833] x 100 = -30.73%
Formula
Percentage change = [(577 - 833) / 833] x 100
Subtract the new number by the original number
577 - 833 = -256
-256 ÷ 833 = -0.30732292917166865
-0.30732292917166865 x 100 = -30.73%