150.81% is the change from 307 to 770
Calculation steps:
[( 770 - 307 ) ÷ 307] x 100 = 150.81%
Formula
Percentage change = [(770 - 307) / 307] x 100
Subtract the new number by the original number
770 - 307 = 463
463 ÷ 307 = 1.50814332247557
1.50814332247557 x 100 = 150.81%