9.41% is the change from 850 to 930
Calculation steps:
[( 930 - 850 ) ÷ 850] x 100 = 9.41%
Formula
Percentage change = [(930 - 850) / 850] x 100
Subtract the new number by the original number
930 - 850 = 80
80 ÷ 850 = 0.09411764705882353
0.09411764705882353 x 100 = 9.41%