2.21% is the change from 770 to 787
Calculation steps:
[( 787 - 770 ) ÷ 770] x 100 = 2.21%
Formula
Percentage change = [(787 - 770) / 770] x 100
Subtract the new number by the original number
787 - 770 = 17
17 ÷ 770 = 0.02207792207792208
0.02207792207792208 x 100 = 2.21%