-17.39% is the change from 857 to 708
Calculation steps:
[( 708 - 857 ) ÷ 857] x 100 = -17.39%
Formula
Percentage change = [(708 - 857) / 857] x 100
Subtract the new number by the original number
708 - 857 = -149
-149 ÷ 857 = -0.17386231038506417
-0.17386231038506417 x 100 = -17.39%