-6.56% is the change from 717 to 670
Calculation steps:
[( 670 - 717 ) ÷ 717] x 100 = -6.56%
Formula
Percentage change = [(670 - 717) / 717] x 100
Subtract the new number by the original number
670 - 717 = -47
-47 ÷ 717 = -0.06555090655509066
-0.06555090655509066 x 100 = -6.56%