-22.71% is the change from 819 to 633
Calculation steps:
[( 633 - 819 ) ÷ 819] x 100 = -22.71%
Formula
Percentage change = [(633 - 819) / 819] x 100
Subtract the new number by the original number
633 - 819 = -186
-186 ÷ 819 = -0.2271062271062271
-0.2271062271062271 x 100 = -22.71%