67% is the change from 597 to 997
Calculation steps:
[( 997 - 597 ) ÷ 597] x 100 = 67%
Formula
Percentage change = [(997 - 597) / 597] x 100
Subtract the new number by the original number
997 - 597 = 400
400 ÷ 597 = 0.6700167504187605
0.6700167504187605 x 100 = 67%