15% is the change from 680 to 782
Calculation steps:
[( 782 - 680 ) ÷ 680] x 100 = 15%
Formula
Percentage change = [(782 - 680) / 680] x 100
Subtract the new number by the original number
782 - 680 = 102
102 ÷ 680 = 0.15
0.15 x 100 = 15%
Example