-18.32% is the change from 857 to 700
Calculation steps:
[( 700 - 857 ) ÷ 857] x 100 = -18.32%
Formula
Percentage change = [(700 - 857) / 857] x 100
Subtract the new number by the original number
700 - 857 = -157
-157 ÷ 857 = -0.18319719953325556
-0.18319719953325556 x 100 = -18.32%