-21.22% is the change from 806 to 635
Calculation steps:
[( 635 - 806 ) ÷ 806] x 100 = -21.22%
Formula
Percentage change = [(635 - 806) / 806] x 100
Subtract the new number by the original number
635 - 806 = -171
-171 ÷ 806 = -0.21215880893300249
-0.21215880893300249 x 100 = -21.22%