-20.8% is the change from 827 to 655
Calculation steps:
[( 655 - 827 ) ÷ 827] x 100 = -20.8%
Formula
Percentage change = [(655 - 827) / 827] x 100
Subtract the new number by the original number
655 - 827 = -172
-172 ÷ 827 = -0.2079806529625151
-0.2079806529625151 x 100 = -20.8%