-18.62% is the change from 827 to 673
Calculation steps:
[( 673 - 827 ) ÷ 827] x 100 = -18.62%
Formula
Percentage change = [(673 - 827) / 827] x 100
Subtract the new number by the original number
673 - 827 = -154
-154 ÷ 827 = -0.18621523579201935
-0.18621523579201935 x 100 = -18.62%