12.57% is the change from 684 to 770
Calculation steps:
[( 770 - 684 ) ÷ 684] x 100 = 12.57%
Formula
Percentage change = [(770 - 684) / 684] x 100
Subtract the new number by the original number
770 - 684 = 86
86 ÷ 684 = 0.12573099415204678
0.12573099415204678 x 100 = 12.57%