-15.22% is the change from 670 to 568
Calculation steps:
[( 568 - 670 ) ÷ 670] x 100 = -15.22%
Formula
Percentage change = [(568 - 670) / 670] x 100
Subtract the new number by the original number
568 - 670 = -102
-102 ÷ 670 = -0.15223880597014924
-0.15223880597014924 x 100 = -15.22%