333.8% is the change from 71 to 308
Calculation steps:
[( 308 - 71 ) ÷ 71] x 100 = 333.8%
Formula
Percentage change = [(308 - 71) / 71] x 100
Subtract the new number by the original number
308 - 71 = 237
237 ÷ 71 = 3.3380281690140845
3.3380281690140845 x 100 = 333.8%