64.25% is the change from 607 to 997
Calculation steps:
[( 997 - 607 ) ÷ 607] x 100 = 64.25%
Formula
Percentage change = [(997 - 607) / 607] x 100
Subtract the new number by the original number
997 - 607 = 390
390 ÷ 607 = 0.642504118616145
0.642504118616145 x 100 = 64.25%