151.46% is the change from 309 to 777
Calculation steps:
[( 777 - 309 ) ÷ 309] x 100 = 151.46%
Formula
Percentage change = [(777 - 309) / 309] x 100
Subtract the new number by the original number
777 - 309 = 468
468 ÷ 309 = 1.5145631067961165
1.5145631067961165 x 100 = 151.46%