2350% is the change from 12 to 294
Calculation steps:
[( 294 - 12 ) ÷ 12] x 100 = 2350%
Formula
Percentage change = [(294 - 12) / 12] x 100
Subtract the new number by the original number
294 - 12 = 282
282 ÷ 12 = 23.5
23.5 x 100 = 2350%
Example