-4.86% is the change from 700 to 666
Calculation steps:
[( 666 - 700 ) ÷ 700] x 100 = -4.86%
Formula
Percentage change = [(666 - 700) / 700] x 100
Subtract the new number by the original number
666 - 700 = -34
-34 ÷ 700 = -0.04857142857142857
-0.04857142857142857 x 100 = -4.86%
Example