2269.23% is the change from 13 to 308
Calculation steps:
[( 308 - 13 ) ÷ 13] x 100 = 2269.23%
Formula
Percentage change = [(308 - 13) / 13] x 100
Subtract the new number by the original number
308 - 13 = 295
295 ÷ 13 = 22.692307692307693
22.692307692307693 x 100 = 2269.23%