21.04% is the change from 347 to 420
Calculation steps:
[( 420 - 347 ) ÷ 347] x 100 = 21.04%
Formula
Percentage change = [(420 - 347) / 347] x 100
Subtract the new number by the original number
420 - 347 = 73
73 ÷ 347 = 0.21037463976945245
0.21037463976945245 x 100 = 21.04%