34.6% is the change from 630 to 848
Calculation steps:
[( 848 - 630 ) ÷ 630] x 100 = 34.6%
Formula
Percentage change = [(848 - 630) / 630] x 100
Subtract the new number by the original number
848 - 630 = 218
218 ÷ 630 = 0.346031746031746
0.346031746031746 x 100 = 34.6%