62.73% is the change from 609 to 991
Calculation steps:
[( 991 - 609 ) ÷ 609] x 100 = 62.73%
Formula
Percentage change = [(991 - 609) / 609] x 100
Subtract the new number by the original number
991 - 609 = 382
382 ÷ 609 = 0.6272577996715928
0.6272577996715928 x 100 = 62.73%