-23.22% is the change from 827 to 635
Calculation steps:
[( 635 - 827 ) ÷ 827] x 100 = -23.22%
Formula
Percentage change = [(635 - 827) / 827] x 100
Subtract the new number by the original number
635 - 827 = -192
-192 ÷ 827 = -0.23216444981862153
-0.23216444981862153 x 100 = -23.22%