78.45% is the change from 348 to 621
Calculation steps:
[( 621 - 348 ) ÷ 348] x 100 = 78.45%
Formula
Percentage change = [(621 - 348) / 348] x 100
Subtract the new number by the original number
621 - 348 = 273
273 ÷ 348 = 0.7844827586206896
0.7844827586206896 x 100 = 78.45%