-21.17% is the change from 836 to 659
Calculation steps:
[( 659 - 836 ) ÷ 836] x 100 = -21.17%
Formula
Percentage change = [(659 - 836) / 836] x 100
Subtract the new number by the original number
659 - 836 = -177
-177 ÷ 836 = -0.2117224880382775
-0.2117224880382775 x 100 = -21.17%