107.44% is the change from 309 to 641
Calculation steps:
[( 641 - 309 ) ÷ 309] x 100 = 107.44%
Formula
Percentage change = [(641 - 309) / 309] x 100
Subtract the new number by the original number
641 - 309 = 332
332 ÷ 309 = 1.0744336569579287
1.0744336569579287 x 100 = 107.44%