-31.12% is the change from 919 to 633
Calculation steps:
[( 633 - 919 ) ÷ 919] x 100 = -31.12%
Formula
Percentage change = [(633 - 919) / 919] x 100
Subtract the new number by the original number
633 - 919 = -286
-286 ÷ 919 = -0.31120783460282914
-0.31120783460282914 x 100 = -31.12%