78.16% is the change from 348 to 620
Calculation steps:
[( 620 - 348 ) ÷ 348] x 100 = 78.16%
Formula
Percentage change = [(620 - 348) / 348] x 100
Subtract the new number by the original number
620 - 348 = 272
272 ÷ 348 = 0.7816091954022989
0.7816091954022989 x 100 = 78.16%