1221.74% is the change from 23 to 304
Calculation steps:
[( 304 - 23 ) ÷ 23] x 100 = 1221.74%
Formula
Percentage change = [(304 - 23) / 23] x 100
Subtract the new number by the original number
304 - 23 = 281
281 ÷ 23 = 12.217391304347826
12.217391304347826 x 100 = 1221.74%