-8.87% is the change from 857 to 781
Calculation steps:
[( 781 - 857 ) ÷ 857] x 100 = -8.87%
Formula
Percentage change = [(781 - 857) / 857] x 100
Subtract the new number by the original number
781 - 857 = -76
-76 ÷ 857 = -0.08868144690781797
-0.08868144690781797 x 100 = -8.87%