-1.17% is the change from 857 to 847
Calculation steps:
[( 847 - 857 ) ÷ 857] x 100 = -1.17%
Formula
Percentage change = [(847 - 857) / 857] x 100
Subtract the new number by the original number
847 - 857 = -10
-10 ÷ 857 = -0.011668611435239206
-0.011668611435239206 x 100 = -1.17%