20.37% is the change from 378 to 455
Calculation steps:
[( 455 - 378 ) ÷ 378] x 100 = 20.37%
Formula
Percentage change = [(455 - 378) / 378] x 100
Subtract the new number by the original number
455 - 378 = 77
77 ÷ 378 = 0.2037037037037037
0.2037037037037037 x 100 = 20.37%