12.05% is the change from 830 to 930
Calculation steps:
[( 930 - 830 ) ÷ 830] x 100 = 12.05%
Formula
Percentage change = [(930 - 830) / 830] x 100
Subtract the new number by the original number
930 - 830 = 100
100 ÷ 830 = 0.12048192771084337
0.12048192771084337 x 100 = 12.05%