135.6% is the change from 309 to 728
Calculation steps:
[( 728 - 309 ) ÷ 309] x 100 = 135.6%
Formula
Percentage change = [(728 - 309) / 309] x 100
Subtract the new number by the original number
728 - 309 = 419
419 ÷ 309 = 1.3559870550161812
1.3559870550161812 x 100 = 135.6%