2.29% is the change from 830 to 849
Calculation steps:
[( 849 - 830 ) ÷ 830] x 100 = 2.29%
Formula
Percentage change = [(849 - 830) / 830] x 100
Subtract the new number by the original number
849 - 830 = 19
19 ÷ 830 = 0.02289156626506024
0.02289156626506024 x 100 = 2.29%