11.51% is the change from 556 to 620
Calculation steps:
[( 620 - 556 ) ÷ 556] x 100 = 11.51%
Formula
Percentage change = [(620 - 556) / 556] x 100
Subtract the new number by the original number
620 - 556 = 64
64 ÷ 556 = 0.11510791366906475
0.11510791366906475 x 100 = 11.51%