255.56% is the change from 81 to 288
Calculation steps:
[( 288 - 81 ) ÷ 81] x 100 = 255.56%
Formula
Percentage change = [(288 - 81) / 81] x 100
Subtract the new number by the original number
288 - 81 = 207
207 ÷ 81 = 2.5555555555555554
2.5555555555555554 x 100 = 255.56%