-97.31% is the change from 856 to 23
Calculation steps:
[( 23 - 856 ) ÷ 856] x 100 = -97.31%
Formula
Percentage change = [(23 - 856) / 856] x 100
Subtract the new number by the original number
23 - 856 = -833
-833 ÷ 856 = -0.9731308411214953
-0.9731308411214953 x 100 = -97.31%