33.86% is the change from 378 to 506
Calculation steps:
[( 506 - 378 ) ÷ 378] x 100 = 33.86%
Formula
Percentage change = [(506 - 378) / 378] x 100
Subtract the new number by the original number
506 - 378 = 128
128 ÷ 378 = 0.3386243386243386
0.3386243386243386 x 100 = 33.86%