-18.64% is the change from 810 to 659
Calculation steps:
[( 659 - 810 ) ÷ 810] x 100 = -18.64%
Formula
Percentage change = [(659 - 810) / 810] x 100
Subtract the new number by the original number
659 - 810 = -151
-151 ÷ 810 = -0.18641975308641975
-0.18641975308641975 x 100 = -18.64%