-75.03% is the change from 857 to 214
Calculation steps:
[( 214 - 857 ) ÷ 857] x 100 = -75.03%
Formula
Percentage change = [(214 - 857) / 857] x 100
Subtract the new number by the original number
214 - 857 = -643
-643 ÷ 857 = -0.750291715285881
-0.750291715285881 x 100 = -75.03%