2.17% is the change from 830 to 848
Calculation steps:
[( 848 - 830 ) ÷ 830] x 100 = 2.17%
Formula
Percentage change = [(848 - 830) / 830] x 100
Subtract the new number by the original number
848 - 830 = 18
18 ÷ 830 = 0.021686746987951807
0.021686746987951807 x 100 = 2.17%