-7.85% is the change from 930 to 857
Calculation steps:
[( 857 - 930 ) ÷ 930] x 100 = -7.85%
Formula
Percentage change = [(857 - 930) / 930] x 100
Subtract the new number by the original number
857 - 930 = -73
-73 ÷ 930 = -0.07849462365591398
-0.07849462365591398 x 100 = -7.85%