-19.62% is the change from 836 to 672
Calculation steps:
[( 672 - 836 ) ÷ 836] x 100 = -19.62%
Formula
Percentage change = [(672 - 836) / 836] x 100
Subtract the new number by the original number
672 - 836 = -164
-164 ÷ 836 = -0.19617224880382775
-0.19617224880382775 x 100 = -19.62%