-5% is the change from 700 to 665
Calculation steps:
[( 665 - 700 ) ÷ 700] x 100 = -5%
Formula
Percentage change = [(665 - 700) / 700] x 100
Subtract the new number by the original number
665 - 700 = -35
-35 ÷ 700 = -0.05
-0.05 x 100 = -5%
Example