30.56% is the change from 648 to 846
Calculation steps:
[( 846 - 648 ) ÷ 648] x 100 = 30.56%
Formula
Percentage change = [(846 - 648) / 648] x 100
Subtract the new number by the original number
846 - 648 = 198
198 ÷ 648 = 0.3055555555555556
0.3055555555555556 x 100 = 30.56%