34.19% is the change from 313 to 420
Calculation steps:
[( 420 - 313 ) ÷ 313] x 100 = 34.19%
Formula
Percentage change = [(420 - 313) / 313] x 100
Subtract the new number by the original number
420 - 313 = 107
107 ÷ 313 = 0.34185303514376997
0.34185303514376997 x 100 = 34.19%