305.63% is the change from 71 to 288
Calculation steps:
[( 288 - 71 ) ÷ 71] x 100 = 305.63%
Formula
Percentage change = [(288 - 71) / 71] x 100
Subtract the new number by the original number
288 - 71 = 217
217 ÷ 71 = 3.056338028169014
3.056338028169014 x 100 = 305.63%