52.78% is the change from 648 to 990
Calculation steps:
[( 990 - 648 ) ÷ 648] x 100 = 52.78%
Formula
Percentage change = [(990 - 648) / 648] x 100
Subtract the new number by the original number
990 - 648 = 342
342 ÷ 648 = 0.5277777777777778
0.5277777777777778 x 100 = 52.78%