-1.64% is the change from 670 to 659
Calculation steps:
[( 659 - 670 ) ÷ 670] x 100 = -1.64%
Formula
Percentage change = [(659 - 670) / 670] x 100
Subtract the new number by the original number
659 - 670 = -11
-11 ÷ 670 = -0.016417910447761194
-0.016417910447761194 x 100 = -1.64%