28.7% is the change from 648 to 834
Calculation steps:
[( 834 - 648 ) ÷ 648] x 100 = 28.7%
Formula
Percentage change = [(834 - 648) / 648] x 100
Subtract the new number by the original number
834 - 648 = 186
186 ÷ 648 = 0.28703703703703703
0.28703703703703703 x 100 = 28.7%