-50.55% is the change from 633 to 313
Calculation steps:
[( 313 - 633 ) ÷ 633] x 100 = -50.55%
Formula
Percentage change = [(313 - 633) / 633] x 100
Subtract the new number by the original number
313 - 633 = -320
-320 ÷ 633 = -0.5055292259083728
-0.5055292259083728 x 100 = -50.55%