-1.66% is the change from 842 to 828
Calculation steps:
[( 828 - 842 ) ÷ 842] x 100 = -1.66%
Formula
Percentage change = [(828 - 842) / 842] x 100
Subtract the new number by the original number
828 - 842 = -14
-14 ÷ 842 = -0.0166270783847981
-0.0166270783847981 x 100 = -1.66%