29.52% is the change from 647 to 838
Calculation steps:
[( 838 - 647 ) ÷ 647] x 100 = 29.52%
Formula
Percentage change = [(838 - 647) / 647] x 100
Subtract the new number by the original number
838 - 647 = 191
191 ÷ 647 = 0.29520865533230295
0.29520865533230295 x 100 = 29.52%