24.45% is the change from 319 to 397
Calculation steps:
[( 397 - 319 ) ÷ 319] x 100 = 24.45%
Formula
Percentage change = [(397 - 319) / 319] x 100
Subtract the new number by the original number
397 - 319 = 78
78 ÷ 319 = 0.2445141065830721
0.2445141065830721 x 100 = 24.45%