-3.94% is the change from 685 to 658
Calculation steps:
[( 658 - 685 ) ÷ 685] x 100 = -3.94%
Formula
Percentage change = [(658 - 685) / 685] x 100
Subtract the new number by the original number
658 - 685 = -27
-27 ÷ 685 = -0.03941605839416058
-0.03941605839416058 x 100 = -3.94%