99.67% is the change from 307 to 613
Calculation steps:
[( 613 - 307 ) ÷ 307] x 100 = 99.67%
Formula
Percentage change = [(613 - 307) / 307] x 100
Subtract the new number by the original number
613 - 307 = 306
306 ÷ 307 = 0.996742671009772
0.996742671009772 x 100 = 99.67%