51.81% is the change from 249 to 378
Calculation steps:
[( 378 - 249 ) ÷ 249] x 100 = 51.81%
Formula
Percentage change = [(378 - 249) / 249] x 100
Subtract the new number by the original number
378 - 249 = 129
129 ÷ 249 = 0.5180722891566265
0.5180722891566265 x 100 = 51.81%