6570% is the change from 10 to 667
Calculation steps:
[( 667 - 10 ) ÷ 10] x 100 = 6570%
Formula
Percentage change = [(667 - 10) / 10] x 100
Subtract the new number by the original number
667 - 10 = 657
657 ÷ 10 = 65.7
65.7 x 100 = 6570%
Example