37.74% is the change from 318 to 438
Calculation steps:
[( 438 - 318 ) ÷ 318] x 100 = 37.74%
Formula
Percentage change = [(438 - 318) / 318] x 100
Subtract the new number by the original number
438 - 318 = 120
120 ÷ 318 = 0.37735849056603776
0.37735849056603776 x 100 = 37.74%