-54.21% is the change from 856 to 392
Calculation steps:
[( 392 - 856 ) ÷ 856] x 100 = -54.21%
Formula
Percentage change = [(392 - 856) / 856] x 100
Subtract the new number by the original number
392 - 856 = -464
-464 ÷ 856 = -0.5420560747663551
-0.5420560747663551 x 100 = -54.21%