260% is the change from 80 to 288
Calculation steps:
[( 288 - 80 ) ÷ 80] x 100 = 260%
Formula
Percentage change = [(288 - 80) / 80] x 100
Subtract the new number by the original number
288 - 80 = 208
208 ÷ 80 = 2.6
2.6 x 100 = 260%
Example