6580% is the change from 10 to 668
Calculation steps:
[( 668 - 10 ) ÷ 10] x 100 = 6580%
Formula
Percentage change = [(668 - 10) / 10] x 100
Subtract the new number by the original number
668 - 10 = 658
658 ÷ 10 = 65.8
65.8 x 100 = 6580%
Example