42.29% is the change from 279 to 397
Calculation steps:
[( 397 - 279 ) ÷ 279] x 100 = 42.29%
Formula
Percentage change = [(397 - 279) / 279] x 100
Subtract the new number by the original number
397 - 279 = 118
118 ÷ 279 = 0.4229390681003584
0.4229390681003584 x 100 = 42.29%