-21.95% is the change from 811 to 633
Calculation steps:
[( 633 - 811 ) ÷ 811] x 100 = -21.95%
Formula
Percentage change = [(633 - 811) / 811] x 100
Subtract the new number by the original number
633 - 811 = -178
-178 ÷ 811 = -0.21948212083847102
-0.21948212083847102 x 100 = -21.95%