-21.28% is the change from 827 to 651
Calculation steps:
[( 651 - 827 ) ÷ 827] x 100 = -21.28%
Formula
Percentage change = [(651 - 827) / 827] x 100
Subtract the new number by the original number
651 - 827 = -176
-176 ÷ 827 = -0.21281741233373638
-0.21281741233373638 x 100 = -21.28%
Example