-32.59% is the change from 856 to 577
Calculation steps:
[( 577 - 856 ) ÷ 856] x 100 = -32.59%
Formula
Percentage change = [(577 - 856) / 856] x 100
Subtract the new number by the original number
577 - 856 = -279
-279 ÷ 856 = -0.32593457943925236
-0.32593457943925236 x 100 = -32.59%