66.17% is the change from 600 to 997
Calculation steps:
[( 997 - 600 ) ÷ 600] x 100 = 66.17%
Formula
Percentage change = [(997 - 600) / 600] x 100
Subtract the new number by the original number
997 - 600 = 397
397 ÷ 600 = 0.6616666666666666
0.6616666666666666 x 100 = 66.17%