-49.65% is the change from 856 to 431
Calculation steps:
[( 431 - 856 ) ÷ 856] x 100 = -49.65%
Formula
Percentage change = [(431 - 856) / 856] x 100
Subtract the new number by the original number
431 - 856 = -425
-425 ÷ 856 = -0.49649532710280375
-0.49649532710280375 x 100 = -49.65%