54.1% is the change from 647 to 997
Calculation steps:
[( 997 - 647 ) ÷ 647] x 100 = 54.1%
Formula
Percentage change = [(997 - 647) / 647] x 100
Subtract the new number by the original number
997 - 647 = 350
350 ÷ 647 = 0.5409582689335394
0.5409582689335394 x 100 = 54.1%