-81.04% is the change from 633 to 120
Calculation steps:
[( 120 - 633 ) ÷ 633] x 100 = -81.04%
Formula
Percentage change = [(120 - 633) / 633] x 100
Subtract the new number by the original number
120 - 633 = -513
-513 ÷ 633 = -0.8104265402843602
-0.8104265402843602 x 100 = -81.04%