1.5% is the change from 668 to 678
Calculation steps:
[( 678 - 668 ) ÷ 668] x 100 = 1.5%
Formula
Percentage change = [(678 - 668) / 668] x 100
Subtract the new number by the original number
678 - 668 = 10
10 ÷ 668 = 0.014970059880239521
0.014970059880239521 x 100 = 1.5%