302.82% is the change from 71 to 286
Calculation steps:
[( 286 - 71 ) ÷ 71] x 100 = 302.82%
Formula
Percentage change = [(286 - 71) / 71] x 100
Subtract the new number by the original number
286 - 71 = 215
215 ÷ 71 = 3.028169014084507
3.028169014084507 x 100 = 302.82%