2238.46% is the change from 13 to 304
Calculation steps:
[( 304 - 13 ) ÷ 13] x 100 = 2238.46%
Formula
Percentage change = [(304 - 13) / 13] x 100
Subtract the new number by the original number
304 - 13 = 291
291 ÷ 13 = 22.384615384615383
22.384615384615383 x 100 = 2238.46%