2940% is the change from 10 to 304
Calculation steps:
[( 304 - 10 ) ÷ 10] x 100 = 2940%
Formula
Percentage change = [(304 - 10) / 10] x 100
Subtract the new number by the original number
304 - 10 = 294
294 ÷ 10 = 29.4
29.4 x 100 = 2940%
Example