-10% is the change from 930 to 837
Calculation steps:
[( 837 - 930 ) ÷ 930] x 100 = -10%
Formula
Percentage change = [(837 - 930) / 930] x 100
Subtract the new number by the original number
837 - 930 = -93
-93 ÷ 930 = -0.1
-0.1 x 100 = -10%
Example