66.83% is the change from 597 to 996
Calculation steps:
[( 996 - 597 ) ÷ 597] x 100 = 66.83%
Formula
Percentage change = [(996 - 597) / 597] x 100
Subtract the new number by the original number
996 - 597 = 399
399 ÷ 597 = 0.6683417085427136
0.6683417085427136 x 100 = 66.83%