26% is the change from 300 to 378
Calculation steps:
[( 378 - 300 ) ÷ 300] x 100 = 26%
Formula
Percentage change = [(378 - 300) / 300] x 100
Subtract the new number by the original number
378 - 300 = 78
78 ÷ 300 = 0.26
0.26 x 100 = 26%
Example