-21.33% is the change from 633 to 498
Calculation steps:
[( 498 - 633 ) ÷ 633] x 100 = -21.33%
Formula
Percentage change = [(498 - 633) / 633] x 100
Subtract the new number by the original number
498 - 633 = -135
-135 ÷ 633 = -0.2132701421800948
-0.2132701421800948 x 100 = -21.33%