146.79% is the change from 312 to 770
Calculation steps:
[( 770 - 312 ) ÷ 312] x 100 = 146.79%
Formula
Percentage change = [(770 - 312) / 312] x 100
Subtract the new number by the original number
770 - 312 = 458
458 ÷ 312 = 1.4679487179487178
1.4679487179487178 x 100 = 146.79%