100.33% is the change from 306 to 613
Calculation steps:
[( 613 - 306 ) ÷ 306] x 100 = 100.33%
Formula
Percentage change = [(613 - 306) / 306] x 100
Subtract the new number by the original number
613 - 306 = 307
307 ÷ 306 = 1.0032679738562091
1.0032679738562091 x 100 = 100.33%