-75.58% is the change from 856 to 209
Calculation steps:
[( 209 - 856 ) ÷ 856] x 100 = -75.58%
Formula
Percentage change = [(209 - 856) / 856] x 100
Subtract the new number by the original number
209 - 856 = -647
-647 ÷ 856 = -0.7558411214953271
-0.7558411214953271 x 100 = -75.58%