-5.48% is the change from 857 to 810
Calculation steps:
[( 810 - 857 ) ÷ 857] x 100 = -5.48%
Formula
Percentage change = [(810 - 857) / 857] x 100
Subtract the new number by the original number
810 - 857 = -47
-47 ÷ 857 = -0.05484247374562427
-0.05484247374562427 x 100 = -5.48%