42.86% is the change from 294 to 420
Calculation steps:
[( 420 - 294 ) ÷ 294] x 100 = 42.86%
Formula
Percentage change = [(420 - 294) / 294] x 100
Subtract the new number by the original number
420 - 294 = 126
126 ÷ 294 = 0.42857142857142855
0.42857142857142855 x 100 = 42.86%