-17.04% is the change from 857 to 711
Calculation steps:
[( 711 - 857 ) ÷ 857] x 100 = -17.04%
Formula
Percentage change = [(711 - 857) / 857] x 100
Subtract the new number by the original number
711 - 857 = -146
-146 ÷ 857 = -0.17036172695449242
-0.17036172695449242 x 100 = -17.04%