258.97% is the change from 78 to 280
Calculation steps:
[( 280 - 78 ) ÷ 78] x 100 = 258.97%
Formula
Percentage change = [(280 - 78) / 78] x 100
Subtract the new number by the original number
280 - 78 = 202
202 ÷ 78 = 2.58974358974359
2.58974358974359 x 100 = 258.97%