-23% is the change from 826 to 636
Calculation steps:
[( 636 - 826 ) ÷ 826] x 100 = -23%
Formula
Percentage change = [(636 - 826) / 826] x 100
Subtract the new number by the original number
636 - 826 = -190
-190 ÷ 826 = -0.23002421307506055
-0.23002421307506055 x 100 = -23%