-5.02% is the change from 857 to 814
Calculation steps:
[( 814 - 857 ) ÷ 857] x 100 = -5.02%
Formula
Percentage change = [(814 - 857) / 857] x 100
Subtract the new number by the original number
814 - 857 = -43
-43 ÷ 857 = -0.050175029171528586
-0.050175029171528586 x 100 = -5.02%