-21.48% is the change from 633 to 497
Calculation steps:
[( 497 - 633 ) ÷ 633] x 100 = -21.48%
Formula
Percentage change = [(497 - 633) / 633] x 100
Subtract the new number by the original number
497 - 633 = -136
-136 ÷ 633 = -0.21484992101105846
-0.21484992101105846 x 100 = -21.48%