-28.5% is the change from 856 to 612
Calculation steps:
[( 612 - 856 ) ÷ 856] x 100 = -28.5%
Formula
Percentage change = [(612 - 856) / 856] x 100
Subtract the new number by the original number
612 - 856 = -244
-244 ÷ 856 = -0.2850467289719626
-0.2850467289719626 x 100 = -28.5%