12.53% is the change from 830 to 934
Calculation steps:
[( 934 - 830 ) ÷ 830] x 100 = 12.53%
Formula
Percentage change = [(934 - 830) / 830] x 100
Subtract the new number by the original number
934 - 830 = 104
104 ÷ 830 = 0.12530120481927712
0.12530120481927712 x 100 = 12.53%