-2.22% is the change from 857 to 838
Calculation steps:
[( 838 - 857 ) ÷ 857] x 100 = -2.22%
Formula
Percentage change = [(838 - 857) / 857] x 100
Subtract the new number by the original number
838 - 857 = -19
-19 ÷ 857 = -0.022170361726954493
-0.022170361726954493 x 100 = -2.22%