38.49% is the change from 556 to 770
Calculation steps:
[( 770 - 556 ) ÷ 556] x 100 = 38.49%
Formula
Percentage change = [(770 - 556) / 556] x 100
Subtract the new number by the original number
770 - 556 = 214
214 ÷ 556 = 0.38489208633093525
0.38489208633093525 x 100 = 38.49%