41% is the change from 300 to 423
Calculation steps:
[( 423 - 300 ) ÷ 300] x 100 = 41%
Formula
Percentage change = [(423 - 300) / 300] x 100
Subtract the new number by the original number
423 - 300 = 123
123 ÷ 300 = 0.41
0.41 x 100 = 41%
Example