53.01% is the change from 647 to 990
Calculation steps:
[( 990 - 647 ) ÷ 647] x 100 = 53.01%
Formula
Percentage change = [(990 - 647) / 647] x 100
Subtract the new number by the original number
990 - 647 = 343
343 ÷ 647 = 0.5301391035548686
0.5301391035548686 x 100 = 53.01%