64.79% is the change from 605 to 997
Calculation steps:
[( 997 - 605 ) ÷ 605] x 100 = 64.79%
Formula
Percentage change = [(997 - 605) / 605] x 100
Subtract the new number by the original number
997 - 605 = 392
392 ÷ 605 = 0.6479338842975206
0.6479338842975206 x 100 = 64.79%