336.62% is the change from 71 to 310
Calculation steps:
[( 310 - 71 ) ÷ 71] x 100 = 336.62%
Formula
Percentage change = [(310 - 71) / 71] x 100
Subtract the new number by the original number
310 - 71 = 239
239 ÷ 71 = 3.3661971830985915
3.3661971830985915 x 100 = 336.62%