99.03% is the change from 308 to 613
Calculation steps:
[( 613 - 308 ) ÷ 308] x 100 = 99.03%
Formula
Percentage change = [(613 - 308) / 308] x 100
Subtract the new number by the original number
613 - 308 = 305
305 ÷ 308 = 0.9902597402597403
0.9902597402597403 x 100 = 99.03%