7.91% is the change from 721 to 778
Calculation steps:
[( 778 - 721 ) ÷ 721] x 100 = 7.91%
Formula
Percentage change = [(778 - 721) / 721] x 100
Subtract the new number by the original number
778 - 721 = 57
57 ÷ 721 = 0.07905686546463246
0.07905686546463246 x 100 = 7.91%