-27.92% is the change from 856 to 617
Calculation steps:
[( 617 - 856 ) ÷ 856] x 100 = -27.92%
Formula
Percentage change = [(617 - 856) / 856] x 100
Subtract the new number by the original number
617 - 856 = -239
-239 ÷ 856 = -0.27920560747663553
-0.27920560747663553 x 100 = -27.92%