144.44% is the change from 315 to 770
Calculation steps:
[( 770 - 315 ) ÷ 315] x 100 = 144.44%
Formula
Percentage change = [(770 - 315) / 315] x 100
Subtract the new number by the original number
770 - 315 = 455
455 ÷ 315 = 1.4444444444444444
1.4444444444444444 x 100 = 144.44%