291.03% is the change from 78 to 305
Calculation steps:
[( 305 - 78 ) ÷ 78] x 100 = 291.03%
Formula
Percentage change = [(305 - 78) / 78] x 100
Subtract the new number by the original number
305 - 78 = 227
227 ÷ 78 = 2.91025641025641
2.91025641025641 x 100 = 291.03%