155.02% is the change from 309 to 788
Calculation steps:
[( 788 - 309 ) ÷ 309] x 100 = 155.02%
Formula
Percentage change = [(788 - 309) / 309] x 100
Subtract the new number by the original number
788 - 309 = 479
479 ÷ 309 = 1.5501618122977345
1.5501618122977345 x 100 = 155.02%